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 A091462 Sum from 3 to a(n) of 1/(3k) exceeds n. 2
 33, 681, 13650, 274140, 5506263, 110596236, 2221384803, 44617706493 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS 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

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Last modified August 21 19:52 EDT 2017. Contains 290906 sequences.