OFFSET
1,2
COMMENTS
Suggested by a posting to the Number Theory mailing list by Dror Speiser.
a(20509) = a(22206) = a(4498151) = 0; all other values are positive. a(n) = 4472988326827347533 for n > 106704271535495739, while a(106704271535495739) = 16. - Charles R Greathouse IV, Jul 03 2013
LINKS
Michael John Jacobson, Computational techniques in quadratic fields, Doctor of Science in Computer Science Thesis, University of Manitoba, 1995, 147 pages, (see Table 6.14, p. 133).
Michael John Jacobson Jr. and Hugh C. Williams, New quadratic polynomials with high densities of prime values, Math. Comp. 72 (2003), 499-519 (see Table 4.3, p. 510).
Richard F. Lukes, A very fast electronic number sieve, Doctor of Philosophy in Computer Science Thesis, University of Manitoba, 1995, 253 pages, (see Table 6.8, p. 140).
Dror Speiser, Posting to NMBRTHRY, Jun 18 2005
Index entries for linear recurrences with constant coefficients, signature (1).
MATHEMATICA
Table[Mod[4472988326827347533, p], {p, Prime[Range[70]]}] (* Harvey P. Dale, Dec 07 2020 *)
PROG
(PARI) a(n)=4472988326827347533%prime(n) \\ Charles R Greathouse IV, Jul 03 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jun 20 2005
STATUS
approved