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Search: id:A115696
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A115696 Pentagonal numbers (A000326) whose digit reversal is a powerful(1) number (A001694). +0
2
1, 925, 1426, 6112, 9801, 140301, 251945, 578151, 2112860, 78883630, 466005001, 52244922262, 394240923000, 527042773467, 706743866647, 797657661680, 869119510700, 1445531162626 (list; graph; listen)
OFFSET

1,2

EXAMPLE

925 is the 25th pentagonal number and 529=23^2 is powerful.

CROSSREFS

Cf. A000326, A001694, A115695.

Adjacent sequences: A115693 A115694 A115695 this_sequence A115697 A115698 A115699

Sequence in context: A022053 A107517 A140906 this_sequence A066741 A116989 A099688

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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