A099979 - OEIS

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A099979

Bisection of A001157.

5, 21, 50, 85, 130, 210, 250, 341, 455, 546, 610, 850, 850, 1050, 1300, 1365, 1450, 1911, 1810, 2210, 2500, 2562, 2650, 3410, 3255, 3570, 4100, 4250, 4210, 5460, 4810, 5461, 6100, 6090, 6500, 7735, 6850, 7602, 8500, 8866, 8410, 10500, 9250, 10370 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	MAPLE	`with(numtheory): seq(sigma[2](2*n), n=1..50); (C. Ronaldo)`
	CROSSREFS	`Sequence in context: A022268 A201279 A146721 * A039659 A147238 A147834` `Adjacent sequences: A099976 A099977 A099978 * A099980 A099981 A099982`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 19 2004`
	EXTENSIONS	`More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 18 2005`

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Last modified February 14 16:58 EST 2012. Contains 205635 sequences.