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 A373761 #14 Jul 07 2024 13:17:13 %S A373761 1,65,8281,1832833,648383681,344889060481,263241070687225, %T A373761 277821953546314241,393388714018670749633,728818437848717556976321, %U A373761 1729501321168395811504313561,5161574686582090379099550582145,19067391184605659825359397658612481,85976151321068604971683536102183592193 %N A373761 Row sums of A371277. %H A373761 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 A373761 a := 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)^3*T(n - 1, k); end if; end proc; add(T(n, k), k = 2 .. n); end proc: %p A373761 seq(a(n), n = 0 .. 18); %Y A373761 Cf. A371277. %K A373761 nonn %O A373761 2,2 %A A373761 _Aleks Zigon Tankosic_, Jun 17 2024