A076983 - OEIS

A076983

Smallest triangular number divisible by exactly n triangular numbers.

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, 472612140, 953993040, 668883600

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OFFSET

1,2

COMMENTS

2*a(n) = smallest oblong number with exactly n oblong divisors. - Ray Chandler, Jun 29 2008

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..155 (terms 1..80 from Ray Chandler)

EXAMPLE

a(5) = 105 has 5 divisors which are triangular numbers (1, 3, 15, 21 and 105).

CROSSREFS

Cf. A000217, A076982, A084260.

Sequence in context: A119184 A350991 A084260 * A068084 A003674 A211895