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A004357
a(n) = binomial(6*n,n-2).
1
1, 18, 276, 4060, 58905, 850668, 12271512, 177100560, 2558620845, 37014131440, 536211932256, 7778680504140, 112992892764570, 1643385429346680, 23929614612052080, 348822899204435040
OFFSET
2,2
REFERENCES
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 828.
LINKS
M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].
MAPLE
A004357:=n->binomial(6*n, n-2): seq(A004357(n), n=2..30); # Wesley Ivan Hurt, May 26 2015
MATHEMATICA
Table[Binomial[6 n, n - 2], {n, 2, 20}] (* Vincenzo Librandi, Mar 31 2017 *)
PROG
(PARI) a(n)=binomial(6*n, n-2) \\ Charles R Greathouse IV, May 26 2015
(Magma) [Binomial(6*n, n-2): n in [2..30]]; // Vincenzo Librandi, Mar 31 2017
CROSSREFS
Sequence in context: A083445 A159740 A115903 * A249598 A245924 A368526
KEYWORD
nonn,easy
STATUS
approved