A086071 - OEIS

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A086071

Number of 0's in decimal expansion of triangular number n(n+1)/2.

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

	OFFSET	`0,25`
	EXAMPLE	`tri(4)=10, so a(4)=1 and tri(24)=300, so a(24)=2.`
	CROSSREFS	`Cf. 1's A086072, 2's A086073, 3's A086074, 4's A086075, 5's A086076, 6's A086077, 7's A086078, 8's A086079, 9's A086080.` `Sequence in context: A062977 A072325 A076948 * A089813 A037845 A037881` `Adjacent sequences: A086068 A086069 A086070 * A086072 A086073 A086074`
	KEYWORD	`base,nonn`
	AUTHOR	`Jason Earls (zevi_35711(AT)yahoo.com), Jul 08 2003`

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Last modified February 14 17:10 EST 2012. Contains 205644 sequences.