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 A334767 #17 May 29 2020 02:22:04
%S A334767 2,6,24,96,384,2304,9216,46080,276480,1658880,6635520,53084160,
%T A334767 212336640,1274019840,10192158720,61152952320,244611809280,
%U A334767 2201506283520,8806025134080,70448201072640,563585608581120,3381513651486720,13526054605946880
%N A334767 a(n) = Product_{k=1..n} d(2*k), where d() is the number of divisors function A000005.
%e A334767 a(4) = d(2)*d(4)*d(6)*d(8) = 2*3*4*4 = 96.
%t A334767 Rest @ FoldList[Times, 1, DivisorSigma[0, Range[2, 40, 2]]] (* _Amiram Eldar_, May 10 2020 *)
%o A334767 (PARI) a(n) = prod(k=1, n, numdiv(2*k)); \\ _Michel Marcus_, May 10 2020
%Y A334767 Cf. A000005, A066843, A099777.
%K A334767 nonn
%O A334767 1,1
%A A334767 _Ctibor O. Zizka_, May 10 2020