id:A062099 - OEIS Search Results

Search: id:A062099

Displaying 1-1 of 1 results found.

page 1

A062099

Triangular numbers with the sum of the digits a triangular number.

+0
1

0, 1, 3, 6, 10, 15, 21, 28, 55, 78, 91, 105, 120, 136, 190, 210, 231, 253, 276, 300, 325, 406, 465, 528, 703, 780, 820, 861, 1081, 1176, 1225, 1275, 1540, 1596, 1653, 1711, 1770, 2080, 2211, 2346, 2701, 2775, 2850, 3003, 3160, 3403, 3486, 3570, 3741, 3828 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`a(8) = 28 is a triangular number, and the sum of digits 10 is also a triangular number.`
	CROSSREFS	`A000217.` `Sequence in context: A025730 A066353 A117520 this_sequence A115650 A025745 A101551` `Adjacent sequences: A062096 A062097 A062098 this_sequence A062100 A062101 A062102`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 16 2001`
	EXTENSIONS	`More terms from Erich Friedman (efriedma(AT)stetson.edu), Jun 20 2001`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research