Rows of A152980 when written as a triangle converge to this sequence.
4, 7, 9, 10, 15, 22, 21, 14, 15, 23, 28, 35, 52, 64, 49, 22, 15, 23, 28, 35, 52, 65, 56, 43
2 seqfan posts
Tue Apr 14 09:37:38 CEST 2009 [seqfan] Re: confused about toothpick sequence A139250!