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A123069 Odd positive integers that are not the sum of four positive squares. 1
1, 3, 5, 9, 11, 17, 29, 41 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Odd terms of A000534. [From Max Alekseyev, Nov 16 2008]

REFERENCES

J. H. Conway, The Sensual (Quadratic) Form, M.A.A., 1997, p. 140.

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. 2, p. 302.

LINKS

Table of n, a(n) for n=1..8.

CROSSREFS

Cf. A000534.

Sequence in context: A230721 A094509 A120811 * A270836 A100456 A059819

Adjacent sequences:  A123066 A123067 A123068 * A123070 A123071 A123072

KEYWORD

nonn,fini,full,changed

AUTHOR

N. J. A. Sloane, Sep 27 2006

STATUS

approved

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Last modified March 23 14:17 EDT 2019. Contains 321431 sequences. (Running on oeis4.)