A126797 Number of absolute pseudoprimes U_{5,5}(m) with m <= 10^n.

2, 5, 22, 107, 616, 3516, 22163

Offset

3,1

Comments

U_{5,5}(m) is a polynomial producing many pseudoprimes with 5 factors. "In this paper, we introduce a certain method to construct polynomials producing many absolute pseudoprimes. By this method, we give new polynomials producing absolute pseudoprimes with any fixed number of prime factors which can be viewed as a generalization of Chernick's result. By the similar method, we give another type of polynomials producing many absolute pseudoprimes. As concrete examples, we tabulate the counts of such numbers of our forms."

Links

Table of n, a(n) for n=3..9.

Ken Nakamula, Hirofumi Tsumura and Hiroaki Komai, New polynomials producing absolute pseudoprimes with any number of prime factors. Sequence is taken from Table 2, p. 9.

Crossrefs

Cf. A002997, A052155, A083737, A084653, A005382, A005937, A020137, A033181.

Sequence in context: A241345 A272821 A278439 * A101206 A294467 A177251

Adjacent sequences: A126794 A126795 A126796 * A126798 A126799 A126800

Keyword

nonn

Author

Jonathan Vos Post, Feb 20 2007

Status

approved