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A001226 Lerch's function q_2 = (2^{phi(n)} - 1)/n, n odd. +0
1
1, 1, 3, 9, 7, 93, 315, 17, 3855, 13797, 195, 182361, 41943, 9709, 9256395, 34636833, 31775, 479349, 1857283155, 430185, 26817356775, 102280151421, 372827, 1497207322929, 89756051247, 84215045, 84973577874915 (list; graph; listen)
OFFSET

1,3

REFERENCES

L. E. Dickson, History of the Theory of Numbers. Carnegie Institute Public. 256, Washington, DC, Vol. 1, 1919; Vol. 2, 1920; Vol. 3, 1923, see vol. 1, p. 109.

CROSSREFS

Cf. A000010.

Sequence in context: A010634 A146179 A137299 this_sequence A093498 A021255 A070342

Adjacent sequences: A001223 A001224 A001225 this_sequence A001227 A001228 A001229

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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