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

Offset: 1

Author

Amarnath Murthy, Oct 25 2002

Keywords

• nonn

Comments

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

Examples

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

Links

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

Crossrefs

Cf. A000217, A076982, A084260.

Extensions

More terms from Lior Manor, Nov 06 2002

More terms from Ray Chandler, Jun 29 2008