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A168067 n*(n^7+1)/2. 2
0, 1, 129, 3282, 32770, 195315, 839811, 2882404, 8388612, 21523365, 50000005, 107179446, 214990854, 407865367, 737894535, 1281445320, 2147483656, 3487878729, 5509980297, 8491781530, 12800000010, 18911429691, 27437936779, 39155492652, 55037657100, 76293945325 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

FORMULA

G.f.: x*(1 + 120*x + 2157*x^2 + 7792*x^3 + 7827*x^4 + 2136*x^5 + 127*x^6)/(1-x)^9. - Vincenzo Librandi, Dec 10 2014

MATHEMATICA

Table[n (n^7 + 1)/2, {n, 0, 40}] (* or *) CoefficientList[Series[x (1 + 120 x + 2157 x^2 + 7792 x^3 + 7827 x^4 + 2136 x^5 + 127 x^6) / (1 - x)^9, {x, 0, 40}], x] (* Vincenzo Librandi, Dec 10 2014 *)

PROG

(MAGMA) [n*(n^7+1)/2: n in [0..40]]; // Vincenzo Librandi, Dec 10 2014

CROSSREFS

Cf. A168635.

Sequence in context: A327337 A305722 A189608 * A232034 A239824 A264370

Adjacent sequences:  A168064 A168065 A168066 * A168068 A168069 A168070

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Dec 11 2009

EXTENSIONS

More terms from Vincenzo Librandi, Dec 10 2014

STATUS

approved

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Last modified October 13 19:52 EDT 2019. Contains 327981 sequences. (Running on oeis4.)