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A104314 Prime coefficient of x^(2*k) in (x^4 + x^3 + x^2 + x + 1)^k for k in A104313. 2
5, 19, 1974442362935339179, 47705925773278538281, 234692178470218983001 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(6) > A005191(195315), if it exists. See A104313 for more information. - Jinyuan Wang, Jul 26 2021
LINKS
MATHEMATICA
f=1; Do[f=Expand[f*(x^4+x^3+x^2+x+1)]; s=Coefficient[f, x, 2n]; If[PrimeQ[s], Print[{n, s}]], {n, 100}]
CROSSREFS
Cf. A005191 (pentanomial coefficients), A104312 (nontrivial prime quadrinomial coefficients), A104313.
Sequence in context: A013531 A357517 A122152 * A302662 A261545 A093482
KEYWORD
nonn
AUTHOR
T. D. Noe, Mar 01 2005
STATUS
approved

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Last modified April 13 02:00 EDT 2024. Contains 371639 sequences. (Running on oeis4.)