

A052461


4magic series constant.


2



1, 177, 5111, 60962, 430729, 2158099, 8488095, 27903044, 79895265, 205033333, 481386807, 1049954918, 2152397897, 4185095383, 7774354687, 13878462600, 23923217921, 39978597945, 64985300791, 103041066666, 159757914953
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OFFSET

1,2


LINKS

Table of n, a(n) for n=1..21.
Eric Weisstein's World of Mathematics, Magic Constant.
Index to sequences with linear recurrences with constant coefficients, signature (10,45,120,210,252,210,120,45,10,1).


FORMULA

G.f.: x*(x^8 +167*x^7 +3386*x^6 +17697*x^5 +30074*x^4 +17697*x^3 +3386*x^2 +167*x +1) / (x 1)^10.  Colin Barker, Jun 06 2013


PROG

(PARI) a(n)=(6*n^9+15*n^7+10*n^5n)/30 \\ Charles R Greathouse IV, Jun 06 2013


CROSSREFS

Cf. A052459, A052460.
Sequence in context: A105988 A083620 A097317 * A173375 A069398 A189910
Adjacent sequences: A052458 A052459 A052460 * A052462 A052463 A052464


KEYWORD

nonn,easy


AUTHOR

Eric W. Weisstein


STATUS

approved



