id:A121896 - OEIS Search Results

Search: id:A121896

Displaying 1-1 of 1 results found.

page 1

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

+0
2

1, 4, 8, 14, 20, 30, 37, 51, 61, 76, 89, 111, 120, 146, 165, 187, 205, 239, 255, 293, 312 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = Sum_{i=1..n} M(i,n) + M(n,i) - M(n,n)`
	EXAMPLE	`a(4)= 1+2+1+1+2+3+4 = 14`
	CROSSREFS	`Sequence in context: A066941 A049420 A055507 this_sequence A131937 A088804 A027924` `Adjacent sequences: A121893 A121894 A121895 this_sequence A121897 A121898 A121899`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava and Giorgio Balzarotti (ppl(AT)spl.at), Sep 01 2006`

page 1

Search completed in 0.002 seconds

Last modified December 11 12:57 EST 2009. Contains 170656 sequences.