A068549 Largest prime < sqrt(2n-4) - 1.

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

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: A004233 A363832 A130259 * A132173 A023968 A284248

Adjacent sequences: A068546 A068547 A068548 * A068550 A068551 A068552

Keyword

nonn

Author

N. J. A. Sloane, Mar 22 2002

Extensions

Name corrected by Sean A. Irvine, Feb 22 2024

Status

approved