A362886 Antidiagonal sums of A362885.
1, 1, 4, 12, 37, 123, 440, 1686, 6901, 30085, 139212, 681336, 3515397, 19064135, 108370384, 644142962, 3994439189, 25789465377, 173033812804, 1204425693988, 8683782562597, 64757730613875, 498827437211176, 3964154812486062, 32463601480302005, 273670283527555869
Offset: 0
Keywords
Crossrefs
Cf. A362885.
Programs
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Mathematica
Join[{1},Table[Sum[(1+2(n-k))k^(n-k),{k,0,n}],{n,25}]]
Formula
a(n) = Sum_{k=0..n} (1 + 2*(n - k))*k^(n-k).