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Search: id:A103833
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| 0, 3, 2, 5, 2, 8, 1, 7, 1, 8, 3, 11, 3, 9, 7, 12, 2, 13, 5, 12, 5, 12, 1, 14, 4, 10, 2, 13, 4, 21, 6, 16, 4, 11, 2, 19, 4, 7, 2, 16, 7, 23, 4, 16, 4, 11, 4, 23, 3, 18, 3, 14, 3, 21, 5, 18, 2, 14, 7, 27, 3, 9, 6, 19, 4, 24, 4, 15
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Dario Alejandro Alpern, Factorization using the Elliptic Curve Method.
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FORMULA
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a(n) = number of prime factors (with repetition) of integer part of (10^(2n) * 34 / 3333).
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EXAMPLE
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a(6)=8 because the factorization of 10201020102 = 2 * 3 * 3 * 7 * 13 * 17 * 37 * 9901.
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MATHEMATICA
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f[n_] := Plus @@ Transpose[ FactorInteger[ IntegerPart[10^(2n)*34 / 3333]]][[2]]; Table[ f[n], {n, 2, 30}]
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CROSSREFS
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Cf. A102044.
Sequence in context: A086571 A133945 A124219 this_sequence A046227 A120842 A103340
Adjacent sequences: A103830 A103831 A103832 this_sequence A103834 A103835 A103836
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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) & Jonathan Vos Post (jvospost2(AT)yahoo.com), Feb 17 2005
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EXTENSIONS
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The sequence continues: ??137??, 24, 8, 24, ??145??, 15, ??149??, 13, 8, 24, 3, 25, 6, 11, 3, 31...
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