A132434 a(n) = A132433(n) - 33.

104, 1064, 8744, 70184, 561704, 4493864, 35951144, 287609384, 2300875304, 18407002664, 147256021544, 1178048172584, 9424385380904, 75395083047464, 603160664379944, 4825285315039784, 38602282520318504, 308818260162548264, 2470546081300386344

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

Sequence in context: A337145 A230028 A340898 * A187589 A200196 A234219

Adjacent sequences: A132431 A132432 A132433 * A132435 A132436 A132437

Keyword

nonn,easy

Author

Vello Reeben (reeben(AT)ut.ee), Aug 25 2007

Status

approved