I suppose it's kind of wasteful(?) or pointless(?) to share this now, but are you guys familiar with Rascals Triangle?
It has some interesting key properties that relate to the grid, columns and e-values a number exist in. I came over it by happenstance when looking into patterns of e's for numbers in different columns.
You know Pascal's triangle, it goes like this:
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
โฆ
Rascal's triangle was "discovered" (created?) by three kids when given an "IQ" test. It went like this:
1
1 1
1 2 1
1 3 3 1
โ What is the next number in the sequence
They didn't write 1 4 6 4 1, like you would assume based on Pascal's triangle, instead they wrote
1 4 5 4 1
When you look at Pascals triangle (and Rascals triangle) you can group 4 numbers in a diamond shape. So for:
1
1 1
1 2 1
1 3 3 1
1 4 5 4 1
A diamond shape here would be
2
1 3
4
You can divide the diamond shape into quadrants: North, East, West and South.
The pattern is:
South = ((East * West) + 1) / North
Pretty sweet, right? But how does it relate to the grid? It turns out that several rows in the rascals triangle is equal to the e's a number at a[t] exists in.
Given:
1
1 1
1 2 1
1 3 3 1
1 4 5 4 1
1 5 7 7 5 1
1 6 9 10 9 6 1
The a[2] in (1, 1) exists at e's = 1, 6 and 9 and is equal to the last line (row 7). a[3] in (1, 1) exists in e's: 1, 10, 17, 22 and 25 which is equal to the 11th row in the Rascal's triangle. It continues like this, matching the e's a number exist in with the triangle.
The formula for calculating the triangle is:
k * (n - k) + 1
Here the 1 is equal to the base or column. Swapping it with any other number and it generates the same triangle except for that column. Think of the above triangle as the e-index(?) for (1, 1).
I know this isn't much and with the guy who knows and understands the grid here, it feels like it falls quite flat. Either way, I wanted to share with you guys.