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A068549 Largest prime <= sqrt(2n-4) - 1. 0
2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11 (list; graph; refs; listen; history; text; internal format)
OFFSET

10,1

REFERENCES

F. Lemmermeyer, Reciprocity Laws From Euler to Eisenstein, Springer-Verlag, 2000, p. 19.

LINKS

Table of n, a(n) for n=10..97.

CROSSREFS

Sequence in context: A105513 A004233 A130259 * A132173 A023968 A284248

Adjacent sequences:  A068546 A068547 A068548 * A068550 A068551 A068552

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 22 2002

STATUS

approved

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Last modified July 12 13:27 EDT 2020. Contains 335663 sequences. (Running on oeis4.)