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Search: id:A002053
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| A002053 |
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a(n) = least value of m for which Liouville's function A002819(m) = -n.
(Formerly M0871 N0333)
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+0
3
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| 2, 3, 8, 13, 20, 31, 32, 53, 76, 79, 80, 117, 176, 181, 182, 193, 200, 283, 284, 285, 286, 293, 440, 443, 468, 661, 678, 683, 684, 1075, 1076, 1087, 1088, 1091, 1092, 1093, 1106, 1109, 1128, 1129, 1130, 1131, 1132, 1637, 1638, 1753, 1756, 1759, 1760, 2699
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Also when n first appears in A072203(m).
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REFERENCES
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H. Gupta, On a table of values of L(n), Proceedings of the Indian Academy of Sciences. Section A, 12 (1940), 407-409.
H. Gupta, A table of values of Liouville's function L(n), Research Bulletin of East Panjab University, No. 3 (Feb. 1950), 45-55.
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LINKS
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T. D. Noe, Table of n, a(n) for n=0..2000
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MATHEMATICA
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f[n_] := f[n] = f[n - 1] -(-1)^Length[Flatten[Table[ #[[1]], {#[[2]]}] & /@ FactorInteger[n]]]; f[1] = 0; Do[k = 1; While[f[k] != n, k++ ]; Print[k], {n, 1, 50}]
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CROSSREFS
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Cf. A008836, A028488 & A072203.
Sequence in context: A086590 A127484 A080478 this_sequence A102315 A004138 A116503
Adjacent sequences: A002050 A002051 A002052 this_sequence A002054 A002055 A002056
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KEYWORD
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nonn,nice
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AUTHOR
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njas
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EXTENSIONS
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More terms from Jud McCranie (j.mccranie(AT)comcast.net).
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