A115702 Triangular numbers whose digit reversal is the product of 2 palindromes greater than 1.

6, 21, 36, 45, 55, 66, 120, 210, 231, 253, 406, 465, 561, 630, 666, 820, 990, 3003, 3240, 4095, 4950, 5050, 5151, 5671, 5995, 6670, 8001, 20503, 23653, 24753, 29403, 31125, 33153, 37950, 41041, 43956, 54615, 57630, 60726, 63546, 66066, 73920

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Example

8001=T(126) and 1008=4*252.

Crossrefs

Cf. A115683.

Sequence in context: A261077 A063126 A256866 * A003340 A345813 A139606

Adjacent sequences: A115699 A115700 A115701 * A115703 A115704 A115705

Keyword

nonn,base

Author

Giovanni Resta, Jan 31 2006

Status

approved