A352557 - OEIS

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A352557

a(n) = number of modules with n elements over the ring of integers in the real quadratic field of discriminant 28.

1, 1, 2, 2, 0, 2, 1, 3, 5, 0, 0, 4, 0, 1, 0, 5, 0, 5, 2, 0, 2, 0, 0, 6, 1, 0, 10, 2, 2, 0, 2, 7, 0, 0, 0, 10, 2, 2, 0, 0, 0, 2, 0, 0, 0, 0, 2, 10, 2, 1, 0, 0, 2, 10, 0, 3, 4, 2, 2, 0, 0, 2, 5, 11, 0, 0, 0, 0, 0, 0, 0, 15, 0, 2, 2, 4, 0, 0, 0, 0, 20, 0, 2, 4, 0, 0, 4, 0, 0, 0, 0, 0, 4, 2, 0, 14, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 0, 20, 2, 0, 4, 5, 2, 4

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OFFSET

1,3

COMMENTS

See A352550 for comments and PARI code.

LINKS

Table of n, a(n) for n=1..114.

CROSSREFS

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

Sequence in context: A259179 A214667 A214665 * A229723 A258040 A215879

Adjacent sequences: A352554 A352555 A352556 * A352558 A352559 A352560

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 20 2022

STATUS

approved