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 A204292 #10 May 08 2021 09:21:31 %S A204292 1,1,3,4,10,15,21,70,84,210,55,924,78,1001,1365,4368,136,18564,171, %T A204292 38760,5985,7315,253,735471,2300,14950,17550,376740,406,5852925,465, %U A204292 906192,40920,46376,52360,94143280,666,73815,82251,76904685,820,118030185,903,7059052,8145060 %N A204292 Binomial(n, d(n)), where d(n) = A000005(n) is the number of divisors of n. %t A204292 Table[Binomial[n, DivisorSigma[0, n]], {n, 1, 50}] (* _Vaclav Kotesovec_, May 08 2021 *) %o A204292 (PARI) vector(60,n,binomial(n,numdiv(n))) %Y A204292 Cf. A000005, A066449, A068904. %K A204292 nonn %O A204292 1,3 %A A204292 _Franklin T. Adams-Watters_, Jan 14 2012