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A124626 Abundant evil numbers. (Abundant numbers that have an even number of ones in their binary representation). 0
12, 18, 20, 24, 30, 36, 40, 48, 54, 60, 66, 72, 78, 80, 90, 96, 102, 108, 114, 120, 126, 132, 144, 150, 156, 160, 180, 192, 198, 204, 210, 216, 222, 228, 240, 246, 252, 258, 260, 264, 270, 272, 282, 288, 294, 300, 306, 308, 312, 318, 320, 330, 340, 350, 354 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..55.

MATHEMATICA

Select[Range[500], EvenQ[Plus @@ IntegerDigits[ #, 2]] && DivisorSigma[1, # ] > 2# &]

CROSSREFS

Intersection of A005101 (abundant numbers) and A001969 (evil numbers).

Sequence in context: A270660 A173490 A005101 * A231547 A290141 A087245

Adjacent sequences:  A124623 A124624 A124625 * A124627 A124628 A124629

KEYWORD

nonn,base

AUTHOR

Tanya Khovanova, Dec 27 2006, Jun 23 2007

STATUS

approved

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Last modified August 21 17:33 EDT 2017. Contains 290891 sequences.