id:A022268 - OEIS Search Results

Search: id:A022268

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n*(11n-1)/2.

+0
1

0, 5, 21, 48, 86, 135, 195, 266, 348, 441, 545, 660, 786, 923, 1071, 1230, 1400, 1581, 1773, 1976, 2190, 2415, 2651, 2898, 3156, 3425, 3705, 3996, 4298, 4611, 4935, 5270, 5616, 5973, 6341, 6720, 7110 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Number of sets with two elements which can be obtained by selecting unique elements from two sets with 2n and 3n elements respectively and n common elements. - Polina S. Dolmatova (polinasport(AT)mail.ru), Jul 11 2003`
	CROSSREFS	`Sequence in context: A078371 A049741 A041825 this_sequence A099979 A039659 A096942` `Adjacent sequences: A022265 A022266 A022267 this_sequence A022269 A022270 A022271`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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

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