A069673 - OEIS

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A069673

Nonpalindromic triangular numbers whose digit reversal is also a triangular number (possibly with fewer digits).

8

10, 120, 153, 190, 300, 351, 630, 820, 17578, 87571, 156520, 180300, 185745, 547581, 557040, 678030, 1461195, 1851850, 5911641, 6056940, 12145056, 12517506, 16678200, 56440000, 60571521, 65054121, 157433640, 188267310, 304119453, 354911403, 1261250200

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OFFSET

1,1

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..123 (terms < 2*10^24)

CROSSREFS

See A066528 for a different version.

Cf. A066703, A179889.

Cf. A003098, A061455, A066569.

Sequence in context: A289215 A223010 A030022 * A373711 A069498 A226767

Adjacent sequences: A069670 A069671 A069672 * A069674 A069675 A069676

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 06 2002

EXTENSIONS

More terms from Jason Earls, Jun 07 2002

a(27)-a(31) from Giovanni Resta, Jun 20 2015

STATUS

approved