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A046677 Number of primes p of the form p=4m^2+1 for n^2<m<(n+1)^2. 0
2, 3, 3, 2, 3, 4, 5, 6, 4, 7, 7, 4, 4, 8, 6, 5, 6, 10, 6, 4, 10, 5, 12, 7, 11, 13, 9, 13, 11, 10, 10, 17, 8, 12, 12, 14, 16, 14, 14, 19, 10, 9, 17, 15, 19, 17, 17, 17, 13, 18, 16, 22, 15, 20, 20, 11, 16, 20, 18, 15, 16, 19, 15, 18, 16, 17, 18, 25, 17, 24, 20, 22, 26, 21, 18, 20, 27 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

P. J. van Albada, Factorization of the numbers n^2+1, Nieuw Arch. Wisk., 16 (1998), pp. 191-197.

CROSSREFS

Sequence in context: A191246 A107918 A002963 * A109747 A105612 A141744

Adjacent sequences:  A046674 A046675 A046676 * A046678 A046679 A046680

KEYWORD

nonn

AUTHOR

Floor van Lamoen (fvlamoen(AT)hotmail.com)

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Last modified February 17 13:14 EST 2012. Contains 206031 sequences.