A123327 - OEIS

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A123327

Let M be the matrix defined in A111490. Sequence gives M(1,1), M(1,2)+M(2,2), M(1,3)+M(2,3)+M(3,3), etc.

1, 3, 5, 8, 10, 15, 16, 23, 25, 31, 34, 45, 42, 55, 60, 67, 69, 86, 84, 103, 102 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)= Sum_{i=1..n} M(i,n)`
	EXAMPLE	`a(4)= 1+2+1+4 = 8`
	CROSSREFS	`Cf. A111490.` `Sequence in context: A062839 A088940 A088937 * A162383 A024679 A187973` `Adjacent sequences: A123324 A123325 A123326 * A123328 A123329 A123330`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava and Giorgio Balzarotti (paoloplava(AT)gmail.com), Sep 26 2006`

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.