A087186 - OEIS

A087186

Q(p)/p where p runs through the primes and Q(k) is the k-th central quadrinomial coefficient (A005190).

2, 4, 31, 304, 40044, 500522, 86094668, 1167752848, 225001039696, 652498288154820, 9451735761626880, 29731605314969017772, 6529673496702876605072, 97300805803445759460364, 21809340225815485957990464, 74647602337610140872493303186, 260456466719887195671579173952976

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OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..263 (terms 1..100 from M. F. Hasler)

MATHEMATICA

f[n_] := Max[CoefficientList[Expand[Sum[x^k, {k, 0, 3}]^n], x]]; Table[f[p]/p, {p, Prime[Range[15]]}] (* Amiram Eldar, Apr 25 2025 *)

CROSSREFS

Cf. A005190.

Sequence in context: A188113 A259115 A051569 * A051759 A051570 A082913

Adjacent sequences: A087183 A087184 A087185 * A087187 A087188 A087189

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Oct 19 2003

STATUS

approved