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 A253788 #8 Jan 18 2015 19:05:13
%S A253788 1,2,12,2160,1905120000,1034766105221882880000000,
%T A253788 139870330430486189977277369128961542673635737600000000000000
%N A253788 Row products of irregular tables A252753 & A252755.
%F A253788 a(0) = 1; for n>1: a(n) = Product_{k = A000079(n-1) .. A000225(n)} A252753(k) = Product_{k = 2^(n-1) .. (2^n)-1} A252753(k).
%o A253788 (Scheme)
%o A253788 (define (A253788 n) (if (zero? n) 1 (mul A252753 (A000079 (- n 1)) (A000225 n))))
%o A253788 (define (mul intfun lowlim uplim) (let multloop ((i lowlim) (res 1)) (cond ((> i uplim) res) (else (multloop (+ 1 i) (* res (intfun i)))))))
%Y A253788 Cf. A253787 (the corresponding sums).
%Y A253788 Cf. A000079, A000225, A252738, A252753, A252755.
%K A253788 nonn
%O A253788 0,2
%A A253788 _Antti Karttunen_, Jan 13 2015