A237880 Conjectured number of distinct integers < 10^n that are Sierpiński or Riesel or simultaneously Sierpiński and Riesel numbers.

0, 0, 0, 0, 1, 16, 134, 1345, 13420

Offset

1,6

Links

Table of n, a(n) for n=1..9.

Wikipedia, Riesel number

Wikipedia, Sierpinski number

Formula

a(n) = A236320(n) + A236321(n) for n <= 9.

Crossrefs

Cf. A076335, A076336, A076337, A101036, A236320, A236321.

Sequence in context: A334979 A183535 A197278 * A284338 A161477 A162327

Adjacent sequences: A237877 A237878 A237879 * A237881 A237882 A237883

Keyword

nonn,more

Author

Arkadiusz Wesolowski, Feb 14 2014

Extensions

Definition clarified by Arkadiusz Wesolowski, Jun 05 2021

Status

approved