id:A080472 - OEIS Search Results

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a(n) = smallest triangular number that is obtained by placing digits anywhere in n; a(n) = n if n is a triangular number.

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1, 21, 3, 45, 15, 6, 78, 28, 91, 10, 171, 120, 136, 1431, 15, 136, 171, 1081, 190, 120, 21, 1225, 231, 2145, 253, 276, 276, 28, 2926, 300, 231, 325, 3003, 2346, 325, 36, 378, 378, 3916, 406, 741, 4278, 435, 4465, 45, 406, 4278, 1485, 496, 1540, 351, 528, 153, 1540 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A068164, A068165, A080470, A080471.` `Adjacent sequences: A080469 A080470 A080471 this_sequence A080473 A080474 A080475` `Sequence in context: A040432 A035419 A040433 this_sequence A118389 A077690 A018855`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 07 2003`
	EXTENSIONS	`More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 11 2003`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

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