A086074 - OEIS

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A086074

Number of 3's in decimal expansion of triangular number n(n+1)/2.

0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,78`
	CROSSREFS	`Cf. 0's A086071, 1's A086072, 2's A086073, 4's A086075, 5's A086076, 6's A086077, 7's A086078, 8's A086079, 9's A086080.` `Sequence in context: A175933 A175940 A037827 * A180601 A089723 A055215` `Adjacent sequences: A086071 A086072 A086073 * A086075 A086076 A086077`
	KEYWORD	`base,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 08 2003`

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Last modified February 16 16:45 EST 2012. Contains 205938 sequences.