A099978 - OEIS

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A099978

Bisection of A001157.

1, 10, 26, 50, 91, 122, 170, 260, 290, 362, 500, 530, 651, 820, 842, 962, 1220, 1300, 1370, 1700, 1682, 1850, 2366, 2210, 2451, 2900, 2810, 3172, 3620, 3482, 3722, 4550, 4420, 4490, 5300, 5042, 5330, 6510, 6100, 6242, 7381, 6890, 7540, 8420, 7922, 8500 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MAPLE	`with(numtheory): A099978 := n->sigma[2](2n-1): seq(sigma[2](2n-1), n=1..60);`
	CROSSREFS	`Sequence in context: A198017 A137351 A134406 * A074789 A125075 A055710` `Adjacent sequences: A099975 A099976 A099977 * A099979 A099980 A099981`
	KEYWORD	`nonn,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 19 2004`
	EXTENSIONS	`More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Dec 07 2004`

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.