A016907 (5n+4)^11.

4194304, 31381059609, 4049565169664, 116490258898219, 1521681143169024, 12200509765705829, 70188843638032384, 317475837322472439, 1196683881290399744, 3909821048582988049, 11384956040305711104

Offset

0,1

Comments

If 5n+4 is a perfect square, that is for n=0,1,9,12,28,33,57,64,..., a(n)=A010810(j), where the indices j are listed in A047221. - R. J. Mathar, Apr 22 2008.

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (12,-66,220,-495,792,-924,792,-495,220,-66,12,-1).

Formula

G.f.: (x^11 +362797044*x^10 +280958106005*x^9 +14192390602560*x^8 +157922022917730*x^7 +565509776420088*x^6 +753319100251602*x^5 +384167580654720*x^4 +69965704049565*x^3 +3673269278420*x^2 +31330727961*x +4194304) / (x -1)^12. [Colin Barker, Feb 22 2013]

Prog

(Magma) [(5*n+4)^11: n in [0..30]]; // Vincenzo Librandi, May 03 2011

Crossrefs

Sequence in context: A224805 A016787 A016811 * A017708 A010810 A137486

Adjacent sequences: A016904 A016905 A016906 * A016908 A016909 A016910

Keyword

nonn,easy

Author

N. J. A. Sloane.

Status

approved