id:A144216 - OEIS Search Results

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C(m,2)+C(n,2), m>=1, n>=1: a rectangular array R read by antidiagonals.

+0
2

0, 1, 1, 3, 2, 3, 6, 4, 4, 6, 10, 7, 6, 7, 10, 15, 11, 9, 9, 11, 15, 21, 16, 13, 12, 13, 16, 21, 28, 22, 18, 16, 16, 18, 22, 28, 36, 29, 24, 21, 20, 21, 24, 29, 36, 45, 37, 31, 27, 25, 25, 27, 31, 37, 45, 55, 46, 39, 34, 31, 30, 31, 34, 39, 46, 55, 66, 56, 48, 42, 38, 36, 36, 38 (list; table; graph; listen)

	OFFSET	`1,4`
	COMMENT	`R is the accumulation array (as defined at A144112) of the weight array A144217.`
	FORMULA	`R(m,n)=(m(m-1)+n(n-1))/2.`
	EXAMPLE	`R(2,4)=C(2,2)+C(4,2)=1+6=7.`
	CROSSREFS	`Cf. A144217.` `Sequence in context: A021313 A113128 A130459 this_sequence A127938 A131990 A033771` `Adjacent sequences: A144213 A144214 A144215 this_sequence A144217 A144218 A144219`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu), Sep 14 2008`

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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.

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