id:A123327 - OEIS Search Results

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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.

+0
1

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

	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: A088940 A088937 A162383 this_sequence A024679 A117467 A133097` `Adjacent sequences: A123324 A123325 A123326 this_sequence A123328 A123329 A123330`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava and Giorgio Balzarotti (ppl(AT)spl.at), Sep 26 2006`

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.