

A091462


Sum from 3 to a(n) of 1/(3k) exceeds n.


2




OFFSET

1,1


LINKS

Table of n, a(n) for n=1..8.


FORMULA

a(n) = 3*A002387(3n).
The next term is approximately the previous term * e^3.


MATHEMATICA

s = 0; k = 3; Do[ While[s = N[s + 1/k, 24]; s <= n, k += 3]; Print[k]; k += 3, {n, 1, 12}]


CROSSREFS

Cf. A002387, A056053, A056054, A091463, A091464.
Sequence in context: A094760 A083956 A164761 * A028210 A028205 A028191
Adjacent sequences: A091459 A091460 A091461 * A091463 A091464 A091465


KEYWORD

nonn


AUTHOR

Robert G. Wilson v, Jan 12 2004


STATUS

approved



