Thread:Numberblocks459/@comment-46470622-20200728145353/@comment-44851822-20200728152852

7yjnfjhnftghnfghn wrote: CatCatCat's Numberstairs (coming soon!)

1, 3, 6, 10, 15 and all the triangular number up to infinity and beyond are taken by me.

3 is Gow-Gow No.