A129790 a(n) = ceiling(6^n/n).

6, 18, 72, 324, 1556, 7776, 39991, 209952, 1119744, 6046618, 32981551, 181398528, 1004668771, 5597440293, 31345665639, 176319369216, 995685849691, 5642219814912, 32071565263711, 182807922003149, 1044616697160851

Offset: 1

Author

Mohammad K. Azarian, May 18 2007

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A053638.

Programs

Magma

[Ceiling(6^n/n):n in [1..30]]; // Vincenzo Librandi, Oct 03 2011