A004389 a(n) = binomial(8*n, n-8).

1, 72, 3160, 109736, 3321960, 91962520, 2392407864, 59487568920, 1429702652400, 33469894423680, 767464189477128, 17307292232623120, 385037822966765800, 8470484585302467168, 184606563010558803400, 3991697442876739754640, 85733828145510955528212

Offset: 8

Author

N. J. A. Sloane

Keywords

• nonn
• easy

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

• Vincenzo Librandi, Table of n, a(n) for n = 8..780
• 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].

Programs

Magma

[Binomial(8*n,n-8): n in [8..30]]; // Vincenzo Librandi, Apr 20 2017

Maple

A004389:=n->binomial(8*n,n-8): seq(A004389(n), n=8..30); # Wesley Ivan Hurt, Apr 18 2017

Mathematica

Table[Binomial[8 n, n - 8], {n, 8, 40}] (* Vincenzo Librandi, Apr 20 2017 *)