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A281223
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The decimal representation of the Elias omega code for n (A281193(n)).
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2
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0, 4, 6, 40, 42, 44, 46, 112, 114, 116, 118, 120, 122, 124, 126, 1312, 1314, 1316, 1318, 1320, 1322, 1324, 1326, 1328, 1330, 1332, 1334, 1336, 1338, 1340, 1342, 2752, 2754, 2756, 2758, 2760, 2762, 2764, 2766, 2768, 2770, 2772, 2774, 2776, 2778, 2780, 2782, 2784, 2786, 2788, 2790
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OFFSET
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1,2
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LINKS
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EXAMPLE
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For n = 6, the Elias omega code for 6 is '101100' which is 44 in decimal. So, a(6) = 44.
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PROG
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(Python)
def E(n):
....s=""
....if n==1:
........return "0"
....else:
........b=(bin(n)[2:])
........s+=E(len(b)-1)+b
....return s
def elias_omega(n):
....return int(E(n)[1:]+"0", 2)
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CROSSREFS
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Cf. A281193, A171885 (Decimal representation of the Elias gamma code for n).
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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