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A104312 Prime coefficient of x^n in (x^3+x^2+x+1)^n for n in A104311. 2
3, 31, 101, 3823, 2266366724843687556556015073508073201681 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(6), which corresponds to n=649, is too large to include.

LINKS

Table of n, a(n) for n=1..5.

MATHEMATICA

f=1; Do[f=Expand[f*(x^3+x^2+x+1)]; s=Coefficient[f, x, n]; If[PrimeQ[s], Print[{n, s}]], {n, 1000}]

CROSSREFS

Cf. A005725 (quadrinomial coefficients), A104314 (nontrivial prime pentanomial coefficients).

Sequence in context: A294973 A307711 A077547 * A326736 A107197 A096060

Adjacent sequences:  A104309 A104310 A104311 * A104313 A104314 A104315

KEYWORD

nonn

AUTHOR

T. D. Noe, Mar 01 2005

STATUS

approved

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Last modified September 28 11:24 EDT 2020. Contains 337393 sequences. (Running on oeis4.)