A390667 Row sums of A390433.

1, 1, 5, 57, 1169, 37673, 1749541, 110331249, 9051479425, 935328762865, 118718609669285, 18140541415043529, 3282534627872283089, 693795240948153885785, 169301519678057018099845, 47223285165741892384761153, 14926103568202657044362472577, 5305482652114245796466821888609, 2106529744413158308667882907529925

Offset

0,3

Links

Table of n, a(n) for n=0..18.

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)^2*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. A371488, A390433.

Sequence in context: A234293 A244288 A009480 * A009481 A209498 A209739

Adjacent sequences: A390664 A390665 A390666 * A390668 A390669 A390670

Keyword

nonn

Author

Aleks Zigon Tankosic, Nov 14 2025

Status

approved