A352554 a(n) = number of modules with n elements over the ring of integers in the real quadratic field of discriminant 17.

1, 2, 0, 5, 0, 0, 0, 10, 1, 0, 0, 0, 2, 0, 0, 20, 1, 2, 2, 0, 0, 0, 0, 0, 1, 4, 0, 0, 0, 0, 0, 36, 0, 2, 0, 5, 0, 4, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 1, 2, 0, 10, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 65, 0, 0, 2, 5, 0, 0, 0, 10, 0, 0, 0, 10, 0, 0, 0, 0, 2, 0, 2, 0, 0, 4, 0, 0, 2, 0, 0, 0, 0, 4, 0, 0, 0, 2, 0, 5, 2, 0, 2, 20, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 4, 0, 0, 1, 0, 0, 0, 0, 0, 2, 110, 0, 0, 0, 0, 0, 4, 0, 10, 2, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 2, 0

Offset

1,2

Comments

See A352550 for comments and PARI code.

Links

Table of n, a(n) for n=1..150.

Crossrefs

Cf. A038540, A038541, A248107, A352550-A352567.

Sequence in context: A374286 A069025 A356815 * A352563 A145962 A066442

Adjacent sequences: A352551 A352552 A352553 * A352555 A352556 A352557

Keyword

nonn

Author

N. J. A. Sloane, Mar 20 2022

Status

approved