A136740 (0, 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3,..) becomes (2, 3, 5, 7, 11^13, 17, 19*23, 29, 31^37, 41^43, 47*53, 59, 61^67*71,..).

2, 3, 5, 7, 34522712143931, 17, 437, 29

Offset: 1

Author

Juri-Stepan Gerasimov, Nov 08 2008

Keywords

• nonn
• less

Examples

			a(5)=11^13=34522712142931.
a(7)=19*23=437,
etc.
		

Crossrefs

Cf. A141269, A141270, A143652, A143653, A143666.

Extensions

Corrected typo in a(5), inserted a(6). R. J. Mathar, Feb 21 2009