id:A027420 - OEIS Search Results

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Triangle T00, T10, T01, T20, T11, T02 etc. where Tmn = number of distinct products ij with min(m,n)<=i,j<=max(m,n).

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1, 2, 2, 4, 1, 4, 7, 3, 3, 7, 10, 6, 1, 6, 10, 15, 9, 3, 3, 9, 15, 19, 14, 6, 1, 6, 14, 19, 26, 18, 10, 3, 3, 10, 18, 26, 31, 25, 14, 6, 1, 6, 14, 25, 31, 37, 30, 20, 10, 3, 3, 10, 20, 30, 37, 43, 36, 25, 15, 6, 1, 6, 15, 25, 36, 43, 54, 42, 31, 20, 10, 3, 3, 10, 20, 31, 42, 54 (list; table; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Cf. A027384.` `Sequence in context: A111580 A138558 A066202 this_sequence A116588 A069922 A072211` `Adjacent sequences: A027417 A027418 A027419 this_sequence A027421 A027422 A027423`
	KEYWORD	`tabl,nonn,easy,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Olivier Gerard, Nov 15 1997`

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

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