A077560 Second smallest integer of prime signature corresponding to that of A025487.

3, 9, 10, 27, 18, 81, 40, 42, 243, 100, 80, 84, 729, 108, 160, 168, 2187, 324, 252, 320, 330, 1000, 336, 6561, 800, 504, 640, 630, 648, 672, 19683, 1600, 1008, 1280, 1320, 1944, 1764, 1344, 59049, 1512, 3200, 1980, 10000, 2016, 2560, 2640, 5832, 2700

Offset: 2

Author

Amarnath Murthy, Nov 10 2002

Keywords

• nonn

Comments

In A025487 the terms are in increasing order but here there are ups and downs.

Links

• Amiram Eldar, Table of n, a(n) for n = 2..10001

Crossrefs

Cf. A025487, A081761.

Formula

a(n) = A081761(A025487(n)). - Amiram Eldar, Dec 29 2020

Extensions

Corrected and extended by Ray Chandler, Aug 24 2003