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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
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
Sequence in context: A064016 A263462 A138735 * A281787 A132937 A068655
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.)