OFFSET
3,1
REFERENCES
V. Reeben, The highly composite numbers by Srinivasa Ramanujan and the fundamental constants of physics. J. Madras Univ., Sect. B, 51 (Ramanujan's 100th birthday issue, with a Table of h.c.n.'s up to 10^102), (1988) 88-146.
LINKS
Colin Barker, Table of n, a(n) for n = 3..1000
Index entries for linear recurrences with constant coefficients, signature (9,-8).
FORMULA
From Colin Barker, May 12 2017: (Start)
G.f.: 8*x^3*(13 + 16*x) / ((1 - x)*(1 - 8*x)).
a(n) = (15*8^n - 1856) / 56 for n>2.
a(n) = 9*a(n-1) - 8*a(n-2) for n>4.
(End)
PROG
(PARI) Vec(8*x^3*(13 + 16*x) / ((1 - x)*(1 - 8*x)) + O(x^30)) \\ Colin Barker, May 12 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vello Reeben (reeben(AT)ut.ee), Aug 25 2007
STATUS
approved