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 A119525 #4 Mar 30 2012 18:40:37 %S A119525 1,-40,-8505,9765625,0 %N A119525 Determinant of n X n matrix of first n^2 nonzero terms of A000332 binomial coefficients binomial(n,4). %C A119525 a(5) = 5^10. %e A119525 a(3) = -8505 = %e A119525 |..1...5..15| %e A119525 |.35..70.126| %e A119525 |210.330.495|. %e A119525 a(4) = 0 because of the singular matrix 0 = %e A119525 |.1...3...6..10| %e A119525 |15..21..28..36| %e A119525 |45..55..66..78| %e A119525 |91.105.120.136|. %Y A119525 Cf. A000217, A119493. %K A119525 easy,sign %O A119525 1,2 %A A119525 _Jonathan Vos Post_, May 27 2006