A136310 - OEIS

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A136310

a(n)=a(n-1)*(2^K)+ n*(n+1)/2 ; a(0)=1; K=floor(log_2 n*(n+1)/2).

1, 2, 7, 34, 282, 2271, 36357, 581740, 18615716, 595702957, 19062494679, 1219999659522, 78079978209486 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A029894 A110313 A000944 * A057298 A058941 A020066` `Adjacent sequences: A136307 A136308 A136309 * A136311 A136312 A136313`
	KEYWORD	`easy,nonn`
	AUTHOR	`Ctibor O. ZIZKA (ctibor.zizka(AT)seznam.cz), Mar 22 2008`

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.