id:A076711 - OEIS Search Results

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Highly composite triangular numbers.

+0
3

1, 3, 6, 28, 36, 120, 300, 528, 630, 2016, 3240, 5460, 25200, 73920, 157080, 437580, 749700, 1385280, 1493856, 2031120, 2162160, 17907120, 76576500, 103672800, 236215980, 842161320, 3090906000, 4819214400, 7589181600, 7966312200 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Shyam Sunder Gupta Fascinating Triangular Numbers`
	EXAMPLE	`a(4)=28: 28 is a triangular number and has 6 divisors. Number of divisors of all triangular numbers less than 28 is less than 6. So 28 is a highly composite triangular number.`
	CROSSREFS	`Cf. A101755, A101756.` `Sequence in context: A074894 A083675 A085076 this_sequence A075088 A102428 A128056` `Adjacent sequences: A076708 A076709 A076710 this_sequence A076712 A076713 A076714`
	KEYWORD	`nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Oct 26 2002`

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Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

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