A345438 Number of primes in the ring R = {x+y*sqrt(-2): x, y rational integers} with norm x^2+2*y^2 equal to A341784(n).

2, 4, 4, 4, 4, 2, 4, 4

Offset

1,1

Comments

See A345437 for further information.

Links

Table of n, a(n) for n=1..8.

Example

The two primes in R with smallest norm are +-sqrt(-2), of norm 2 = A341784(1), so a(1) = 2.

Crossrefs

Cf. A341784, A345437.

Sequence in context: A143194 A036264 A105192 * A203638 A040002 A151798

Adjacent sequences: A345435 A345436 A345437 * A345439 A345440 A345441

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 24 2021

Status

approved