A136740 - OEIS

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

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OFFSET

1,1

LINKS

EXAMPLE

a(5)=11^13=34522712142931.

a(7)=19*23=437,

etc.

CROSSREFS

KEYWORD

nonn,less

AUTHOR

EXTENSIONS

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

STATUS

approved