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

Offset: 0

Author

Zak Seidov, Mar 31 2011

Keywords

• nonn

Links

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

Crossrefs

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

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