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A115705 Primes whose digit reversal is a triangular number. +0
2
3, 19, 307, 523, 631, 1171, 1801, 5563, 8731, 12781, 16831, 30097, 53299, 54181, 56629, 62011, 63667, 64063, 66457, 67411, 67807, 108127, 118801, 128413, 130303, 131059, 160453, 188677, 192637, 196597, 300583, 302851, 357661 (list; graph; listen)
OFFSET

1,1

EXAMPLE

307 is prime and 703=T(73).

CROSSREFS

Cf. A115704.

Sequence in context: A054590 A069344 A003011 this_sequence A136171 A102586 A132876

Adjacent sequences: A115702 A115703 A115704 this_sequence A115706 A115707 A115708

KEYWORD

nonn,base

AUTHOR

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

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.


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