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 A163744 #5 Oct 15 2013 08:43:32 %S A163744 1,1,3,4,23,23,608,3703,59063,65975,65975,65975,3227648,83180983 %N A163744 Smallest positive m such that A050410(m) = 0 (mod n!). %C A163744 Smallest positive m such that m-th truncated square pyramid number tsp(m)=m*(7*m-1)*(2*m-1)/6 is divisible by n!, n=0,1,.. . %e A163744 a(3)=3 because tsp(3)=126 is divisible by 3!: 126/3!=21 %e A163744 a(5)=23 because tsp(23)=27600 is divisible by 5!: 27600/5!=230 %e A163744 a(6)=608 because tsp(608)=523875600 is divisible by 6!: 523875600/6!=727605. %Y A163744 Cf. A050410 Truncated square pyramid numbers:a(n)=sum(k^2, k=n..2*n-1)=(1/6)n(7n-1)(2n-1). %K A163744 more,nonn %O A163744 1,3 %A A163744 _Zak Seidov_, Aug 03 2009