A188427 - OEIS

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A188427

Position of 5^n in A051037 (5-smooth numbers).

1, 5, 16, 37, 72, 125, 198, 295, 419, 574, 764, 991, 1259, 1572, 1931, 2342, 2808, 3332, 3918, 4569, 5288, 6078, 6943, 7887, 8913, 10024, 11224, 12515, 13902, 15387, 16975, 18668, 20470, 22385, 24416, 26567, 28840, 31239, 33768, 36429, 39226, 42164, 45244, 48470, 51846, 55375, 59061, 62907, 66917, 71094, 75441

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OFFSET

0,2

LINKS

Zak Seidov, Table of n, a(n) for n = 0..102

FORMULA

A051037(a(n)) = 5^n.

a(n) ~ c * n^3, where c = log(5)^2/(6*log(2)*log(3)) = 0.566927196003501... - Vaclav Kotesovec and Amiram Eldar, Sep 22 2024

CROSSREFS

Cf. A051037, A188425, A188426 (powers of 2 and 3).

Sequence in context: A264552 A128848 A274248 * A022496 A372403 A296536

Adjacent sequences: A188424 A188425 A188426 * A188428 A188429 A188430

KEYWORD

nonn,changed

AUTHOR

Zak Seidov, Mar 31 2011

STATUS

approved