| 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 51, 52, 53, 54, 55, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 81, 82, 83, 84, 85
(list; graph; listen)
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OFFSET
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1,2
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MAPLE
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with(numtheory): f := [seq( `if`((sigma(i) > sigma(i+1)), i, print( )), i=1..5000)];
seq( `if`(f[i+1] - f[i] = 2, i, print( )), i=1..100);
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CROSSREFS
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Cf. A000203, A053226, A053238, A053239, A053240, A053242, A053243, A053244, A053245.
Sequence in context: A131870 A004724 A099260 this_sequence A132329 A052413 A003247
Adjacent sequences: A053238 A053239 A053240 this_sequence A053242 A053243 A053244
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KEYWORD
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nonn
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AUTHOR
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Asher Auel (asher.auel(AT)reed.edu) Jan 10, 2000
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