id:A076983 - OEIS Search Results

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Smallest triangular number divisible by exactly n triangular numbers.

+0
3

1, 3, 6, 36, 105, 120, 780, 210, 990, 630, 19110, 7140, 5460, 176715, 25200, 73920, 103740, 145530, 97020, 157080, 4744740, 2386020, 1185030, 2031120, 3483480, 13857480, 8817900, 118572300, 88438350, 39209940, 286071240, 2162160 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`2*a(n) = smallest oblong number with exactly n oblong divisors. - Chandler`
	LINKS	`Ray Chandler, Table of n, a(n) for n=1..80`
	EXAMPLE	`a(5) = 105 has 5 divisors which are triangular numbers (1, 3, 15, 21 and 105).`
	CROSSREFS	`Cf. A076982, A084260.` `Sequence in context: A119196 A119184 A084260 this_sequence A068084 A003674 A120595` `Adjacent sequences: A076980 A076981 A076982 this_sequence A076984 A076985 A076986`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 25 2002`
	EXTENSIONS	`More terms from Lior Manor (lior.manor(AT)gmail.com) Nov 06 2002`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

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