1,1
a(5)=11^13=34522712142931.
a(7)=19*23=437,
etc.
Cf. A141269, A141270, A143681, A143652, A143653, A143666.
Adjacent sequences: A136737 A136738 A136739 this_sequence A136741 A136742 A136743
Sequence in context: A007659 A037948 A145380 this_sequence A105994 A120496 A105150
nonn
Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Nov 08 2008
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