id:A092734 - OEIS Search Results

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Numbers n occurring in binary representation of n*(n+1)/2.

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1, 3, 7, 13, 15, 20, 31, 63, 72, 82, 109, 127, 141, 177, 243, 255, 272, 511, 693, 886, 1023, 1056, 1311, 1350, 1480, 2047, 2130, 2378, 3812, 4039, 4095, 4160, 4982, 5422, 5546, 6906, 6933, 7365, 7956, 8191, 9418, 11531, 12465, 13069, 13713 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences related to binary expansion of n`
	EXAMPLE	`n=13->'1101', 13*(13+1)/2=91->'1011011': '..1101.', therefore 13 is a term.`
	CROSSREFS	`Cf. A007088, A000217.` `Sequence in context: A064829 A035496 A056530 this_sequence A002236 A080565 A164344` `Adjacent sequences: A092731 A092732 A092733 this_sequence A092735 A092736 A092737`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 12 2004`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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