id:A127637 - OEIS Search Results

Search: id:A127637

Displaying 1-1 of 1 results found.

page 1

Smallest square-free triangular number with exactly n prime factors.

+0
3

1, 3, 6, 66, 210, 3570, 207690, 930930, 56812470, 1803571770, 32395433070, 265257422430, 91348974206490 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`The sequence of smallest square-free triangular numbers with at least n prime factors has identical terms through 91348974206490 at least.`
	EXAMPLE	`a(12) = 91348974206490 = 235711131719293767*131 = A000217(13516580).`
	CROSSREFS	`Cf. A075088, A076551, A005117, A000217.` `Sequence in context: A137135 A069077 A076551 this_sequence A068665 A050722 A069502` `Adjacent sequences: A127634 A127635 A127636 this_sequence A127638 A127639 A127640`
	KEYWORD	`nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Jan 28 2007, Feb 03 2007`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.