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 A359109 #7 Dec 28 2022 16:47:10 %S A359109 1,1,3,10,38,161,747,3753,20253,116642,713130,4607813,31345921, %T A359109 223767233,1671430607,13030153118,105777688842,892355720117, %U A359109 7808793918123,70763428070825,663061665021433,6415290033157950,64009171867651406,657841277082303361,6956340269434938161 %N A359109 Row sums of the accumulated Stirling2 triangle A359107. %p A359109 with(ListTools): ps := L -> PartialSums(L): %p A359109 seq(add(i, i = ps([seq(Stirling2(n, k), k = 0..n)])), n = 0..24); %o A359109 (PARI) a(n) = sum(k=0, n, sum(j=0, k, stirling(n, j, 2))); \\ _Michel Marcus_, Dec 28 2022 %Y A359109 Cf. A359107. %K A359109 nonn %O A359109 0,3 %A A359109 _Peter Luschny_, Dec 27 2022