A390668 Row sums of A390434.

1, 1, 9, 289, 23329, 3841281, 1120506121, 524513713249, 367074491412609, 364613085619181569, 494185594680161941321, 886218169523023839186081, 2051077919963790828162320929, 6001652324304529198555489613569, 21819462630047750000476711898170569, 97095627958867654849474515977012836321

Offset

0,3

Links

Table of n, a(n) for n=0..15.

Aleks Žigon Tankosič, The Lah Numbers with Higher Level and the Lah Numbers of Order s, arXiv:2510.26842 [math.GM], 2025.

Maple

T := proc(n) local T, k; T := proc(n, k) option remember; if n = k then 1; elif k < 1 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 = 0 .. n); end proc;
seq(T(n), n = 0 .. 12);

Crossrefs

Cf. A373761, A390434.

Sequence in context: A055792 A322243 A364115 * A053935 A332129 A086699

Adjacent sequences: A390665 A390666 A390667 * A390669 A390670 A390671

Keyword

nonn

Author

Aleks Zigon Tankosic, Nov 14 2025

Status

approved