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A370913
a(n) = Sum_{k=0..n} 4^(n - k)*Pochhammer(k/4, n - k). Row sums of A370915(n - k, k).
1
1, 1, 2, 8, 61, 731, 11894, 242986, 5959037, 170357861, 5559592906, 203873583044, 8297471638781, 371083006046887, 18087291356943566, 954257615636120726, 54175808937658443709, 3293085944438180436161, 213379242249449228080322, 14681745401633286267344896
OFFSET
0,3
MATHEMATICA
a[n_] := Sum[4^(n-k) * Pochhammer[k/4, n-k], {k, 0, n}]; Array[a, 20, 0] (* Amiram Eldar, Mar 06 2024 *)
CROSSREFS
Cf. A370915.
Sequence in context: A322012 A188324 A368450 * A208356 A188489 A085657
KEYWORD
nonn
AUTHOR
Peter Luschny, Mar 06 2024
STATUS
approved