OFFSET
27,2
LINKS
T. D. Noe, Table of n, a(n) for n = 27..1000
Index entries for linear recurrences with constant coefficients, signature (28, -378, 3276, -20475, 98280, -376740, 1184040, -3108105, 6906900, -13123110, 21474180, -30421755, 37442160, -40116600, 37442160, -30421755, 21474180, -13123110, 6906900, -3108105, 1184040, -376740, 98280, -20475, 3276, -378, 28, -1).
FORMULA
From Zerinvary Lajos, Aug 18 2008: (Start)
a(n) = C(n,27), n >= 27.
G.f.: x^27/(1-x)^28. (End)
From Amiram Eldar, Dec 11 2020: (Start)
Sum_{n>=27} 1/a(n) = 27/26.
MAPLE
seq(binomial(n, 27), n=27..51); # Zerinvary Lajos, Aug 18 2008
MATHEMATICA
Table[Binomial[n, 27], {n, 27, 60}] (* Vladimir Joseph Stephan Orlovsky, Apr 26 2011 *)
PROG
(Magma) [Binomial(n, 27): n in [27..60]]; // Vincenzo Librandi, Jun 12 2013
(PARI) x='x+O('x^50); Vec(x^27/(1-x)^28) \\ G. C. Greubel, Nov 23 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved