A352561 a(n) = number of modules with n elements over the ring of integers in the imaginary quadratic field of discriminant -3.

1, 0, 1, 1, 0, 0, 2, 0, 2, 0, 0, 1, 2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 0, 0, 1, 0, 3, 2, 0, 0, 2, 0, 0, 0, 0, 2, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 2, 5, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 4, 3, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 1, 2, 0, 0, 2, 0, 5, 0, 0, 2, 0, 0, 0, 0, 0, 0, 4, 0, 2, 0

Offset

1,7

Comments

See A352550 for comments and PARI code.

Appears to be the same sequence as A248107.

Links

Table of n, a(n) for n=1..94.

Crossrefs

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

Sequence in context: A101673 A091395 A248107 * A035220 A227618 A366533

Adjacent sequences: A352558 A352559 A352560 * A352562 A352563 A352564

Keyword

nonn

Author

N. J. A. Sloane, Mar 21 2022

Status

approved