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Search: id:A124580
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| 1, 9, 15, 31, 36, 40, 47, 165, 237, 330, 354, 357, 365, 402, 406, 421, 426, 794, 797, 813, 885, 894, 897, 905, 914, 1257, 1281, 1290, 1298, 1301, 1337, 1522, 1526, 1545, 1842, 1865, 2094, 2098, 2118, 2121, 2137, 2569, 3598, 4602, 4609, 4621, 4629, 4726, 4729
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OFFSET
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1,2
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COMMENT
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Except for a(2), a(5) & a(6) none of these duplicates involve zeros.
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LINKS
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Robert G. Wilson v, Table of n, a(n) for n=1..9066
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EXAMPLE
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Interval 10^n . # of -1 ...# of 0 . # of 1 # of terms
............0.........0.........0.........1........1
............1.........4.........3.........3........1
............2........30........39........31........5
............3.......303.......392.......305.......18
............4......3053......3917......3030.......57
............5.....30421.....39206.....30373......189
............6....303857....392074....304069......636
............7...3039127...3920709...3040164.....1176
............8..30395383..39207306..30397311.....4621
............9.303963673.392072876.303963451....15952
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MATHEMATICA
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p = q = y = z = a = 0; s = {}; Do[ q = Switch[ MoebiusMu@n, -1, y++, 0, z++, 1, a++ ]; If[p == q, AppendTo[s, n - 1]]; p = q, {n, 5000}]; s
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CROSSREFS
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Cf. A124579, Column 2 = A063035, Column 1 + Column 3 = A053462.
Sequence in context: A046356 A060874 A147511 this_sequence A103508 A051246 A062016
Adjacent sequences: A124577 A124578 A124579 this_sequence A124581 A124582 A124583
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 05 2006, Nov 12 2006
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