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A069674 Triangular numbers whose digit permutations yield at least two further triangular numbers. 3
120, 210, 1035, 2080, 4095, 4560, 4950, 5460, 9045, 13530, 15400, 17020, 17205, 17578, 19306, 20100, 20503, 20706, 23005, 30135, 30628, 36046, 37401, 40186, 43071, 43660, 46360, 46971, 50721, 51040, 52003, 53301, 60031, 63190, 66430 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..34.

EXAMPLE

120 yields 21 and 210; 210 yields 21 and 120.

CROSSREFS

Cf. A077671, A095869, A095870.

Sequence in context: A114823 A069790 A064224 * A003015 A098565 A084142

Adjacent sequences:  A069671 A069672 A069673 * A069675 A069676 A069677

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 06 2002

EXTENSIONS

Edited, corrected and extended by Ray Chandler, Jun 29 2004

STATUS

approved

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Last modified November 21 08:52 EST 2018. Contains 317430 sequences. (Running on oeis4.)