This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A125864 #3 Mar 30 2012 18:37:02 %S A125864 1,5,35,365,5990,161525,7387640,586285040,82090572095,20540291522675, %T A125864 9278896006526795,7632398133742637255,11514756687812563119530, %U A125864 32063466203746720003813970,165699104606274900865952221145 %N A125864 Column 4 of table A125860; also equals row sums of matrix power A097712^4. %C A125864 Equals column 0 of matrix power A097712^5, where triangle A097712 satisfies recurrence: A097712(n,k) = A097712(n-1,k) + [A097712^2](n-1,k-1). %Y A125864 Cf. A125860; A097712; other columns: A016121, A125862, A125863, A125865; A125861 (diagonal), A125859 (antidiagonal sums). %K A125864 nonn %O A125864 0,2 %A A125864 _Paul D. Hanna_, Dec 13 2006