id:A118389 - OEIS Search Results

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Least triangular number T(k) that contains the consecutive digits of n, where T(k) = k*(k+1)/2.

+0
2

0, 1, 21, 3, 45, 15, 6, 78, 28, 91, 10, 1176, 120, 136, 1431, 15, 1653, 171, 1830, 190, 120, 21, 1225, 231, 2415, 253, 1326, 276, 28, 2926, 300, 231, 325, 3321, 2346, 3570, 36, 378, 3828, 3916, 406, 741, 4278, 4371, 4465, 45, 465, 4753, 1485, 496, 2850, 351 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`The indices, k, of these T(k) for each n are at A118388.`
	EXAMPLE	`====================` `n k T(k)` `====================` `0 0 0` `1 1 1` `2 6 21` `3 2 3` `4 9 45` `5 5 15` `6 3 6` `7 12 78` `8 7 28` `9 13 91` `10 4 10`
	CROSSREFS	`Cf. A000217, A118388.` `Sequence in context: A035419 A040433 A080472 this_sequence A077690 A018855 A040428` `Adjacent sequences: A118386 A118387 A118388 this_sequence A118390 A118391 A118392`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), Apr 26 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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