A381160 a(n) is the permanent of the n X n matrix whose element (i,j) is equal to A008277(i+3, j) with 1 <= i,j <= n.
1, 1, 22, 3206, 1902936, 3504528354, 16660734321540, 179059038168086056, 3938830136216956996632, 164125096331945477980176920, 12173562237817299484378342192768, 1527294306324982018922212102518520032, 310564445230567070838152555220146533261496, 98712056006032672983172826864304778359411112064
Offset: 0
Keywords
Examples
a(3) = 3206: [1, 7, 6] [1, 15, 25] [1, 31, 90]
Programs
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Mathematica
a[n_]:=Permanent[Table[StirlingS2[i+3,j],{i,n},{j,n}]]; Join[{1},Array[a,13]] -
PARI
a(n) = matpermanent(matrix(n, n, i, j, stirling(i+3,j,2))); \\ Michel Marcus, Feb 16 2025