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 A220653 n^11 + 11*n + 11^n. 4
 1, 23, 2191, 178511, 4208989, 48989231, 364568683, 1996813991, 8804293561, 33739007399, 125937424711, 570623341343, 3881436747541, 36314872538111, 383799398753059, 4185897925275191, 45967322049616753, 505481300395601591, 5559981581902310911 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS This is to A220425 as 11 is to 2, to A220509 as 11 is to 3, to A220511 as 11 is to 5, and to A220528 as 11 is to 7. The subsequence of primes begins: 23, 4185897925275191, see A220787 for the associated n. LINKS Table of n, a(n) for n=0..18. FORMULA a(n) = A008455(n) + A008593(n) + A001020(n). G.f.: (131*x^12 +21186*x^11 +1682460*x^10 +24070936*x^9 +104942001*x^8 +163196604*x^7 +91422264*x^6 +14484216*x^5 -518211*x^4 -131726*x^3 -1860*x^2 -1) / ((x -1)^12*(11*x -1)). - Colin Barker, May 09 2013 EXAMPLE a(1) = 1^11 + 11*1 + 11^1 = 23. MATHEMATICA Table[n^11 + 11*n + 11^n, {n, 0, 30}] (* T. D. Noe, Dec 17 2012 *) PROG (Maxima) A220653(n):=n^11+11*n+11^n\$ makelist(A220653(n), n, 0, 20); /* Martin Ettl, Dec 17 2012 */ CROSSREFS Cf. A008455, A008593, A001020, A220425, A220509, A220511, A220528, A220787. Sequence in context: A064016 A263462 A138735 * A281787 A132937 A068655 Adjacent sequences: A220650 A220651 A220652 * A220654 A220655 A220656 KEYWORD nonn,easy AUTHOR Jonathan Vos Post, Dec 17 2012 STATUS approved

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Last modified May 26 23:01 EDT 2024. Contains 372847 sequences. (Running on oeis4.)