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 A220987 The left Aurifeuillian factor of 11^(22n+11) + 1. 2
 58367, 3812903020530517, 107454987376543082369146967, 2808133028073215608147547774721982717, 72885505321551844061773948114862247606146502767, 1890579685660625069233746109183146734516524279847333062117 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS The corresponding right Aurifeuillian factor is A220988. LINKS Wikipedia, Cunningham Project FORMULA a(n) = 161051 z^10 - 161051 z^9 + 73205 z^8 - 14641 z^7 - 1331 z^6 + 1331 z^5 - 121 z^4 - 121 z^3 + 55 z^2 - 11 z + 1 with z = 11^n. Aurifeuillian factorization: 11^(22n+11) + 1 = (11^(2n+1) + 1) * a(n) * A220988(n). MATHEMATICA Table[z = 11^n; 161051 z^10 - 161051 z^9 + 73205 z^8 - 14641 z^7 - 1331 z^6 + 1331 z^5 - 121 z^4 - 121 z^3 + 55 z^2 - 11 z + 1, {n, 0, 10}] CROSSREFS Cf. A092440, A085601, A220978, A198410, A220979-A220990. Sequence in context: A210106 A227496 A295448 * A273318 A230576 A075980 Adjacent sequences:  A220984 A220985 A220986 * A220988 A220989 A220990 KEYWORD nonn,easy AUTHOR Stuart Clary, Dec 27 2012 STATUS approved

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Last modified June 21 07:27 EDT 2021. Contains 345358 sequences. (Running on oeis4.)