Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #11 May 19 2024 05:15:59
%S 1,17,453,17465,921233,63789145,5616599013,613148157073,
%T 81298838448001,12871080897739073,2398329378160629861,
%U 519554377953510437129,129472180384695112970705,36773246580917492621295817,11807854666147122586977709125,4255708041349122783137436409249,1710617624877842754809697811363969
%N Row sums of A371081.
%C Row sums of A371081 are the summed (2, 2)-Lah numbers (A371081).
%H A. Žigon Tankosič, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL26/Tankosic/tank2.html">The (l,r)-Lah Numbers</a>, Journal of Integer Sequences, Article 23.2.6, vol. 26 (2023).
%p T := proc(n) local T, k; T := proc(n, k) option remember; if n = k then 1; elif k < 2 or n < k then 0; else T(n - 1, k - 1) + (n + k - 1)^2*T(n - 1, k); end if; end proc; add(T(n, k), k = 2 .. n); end proc; seq(T(n), n = 0 .. 18);
%Y Cf. A371081.
%K nonn
%O 2,2
%A _Aleks Zigon Tankosic_, Apr 22 2024