A118911 - OEIS

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A118911

Row sums of triangle in A128973 .

1, 1, 3, 3, 3, 3, 5, 5, 3, 3, 9, 9, 5, 5, 11, 11, 3, 3, 9, 9, 9, 9, 15, 15, 5, 5, 15, 15, 11, 11, 21, 21, 3, 3, 9, 9, 9, 9, 15, 15, 9, 9, 27, 27, 15, 15, 33, 33, 9, 9, 27, 27, 27, 27, 45, 45, 15, 15, 45, 45, 33, 33, 63, 63, 5, 5, 15, 15, 15, 15, 25, 25, 15, 15, 45, 45, 25, 25, 55, 55, 11, 11 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Integers in A071053 repeated .`
	FORMULA	`a(2n)=a(2n+1) . a(n)=Sum_{k, 0<=k<=n}A128973(n,k) . a(2^k+m)=3*a(m) for 0<=m<=2^(k-1)-1, k>=1 .` `a(4n)=a(2n)=A071053(n) .`
	CROSSREFS	`Sequence in context: A056206 A125713 A162220 * A190268 A111756 A130821` `Adjacent sequences: A118908 A118909 A118910 * A118912 A118913 A118914`
	KEYWORD	`nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), May 02 2007, Jan 06 2008`

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.