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A352562 a(n) = number of modules with n elements over the ring of integers in the imaginary quadratic field of discriminant -4. 0
1, 1, 0, 2, 2, 0, 0, 3, 1, 2, 0, 0, 2, 0, 0, 5, 2, 1, 0, 4, 0, 0, 0, 0, 5, 2, 0, 0, 2, 0, 0, 7, 0, 2, 0, 2, 2, 0, 0, 6, 2, 0, 0, 0, 2, 0, 0, 0, 1, 5, 0, 4, 2, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 11, 4, 0, 0, 4, 0, 0, 0, 3, 2, 2, 0, 0, 0, 0, 0, 10, 2, 2, 0, 0, 4, 0, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 2, 1, 0, 10, 2, 0, 0, 6, 0, 2, 0, 0, 2, 0, 0, 0, 2, 0, 0, 4, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
See A352550 for comments and PARI code.
LINKS
CROSSREFS
Sequence in context: A145264 A300333 A357019 * A362326 A352909 A323473
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Mar 21 2022
STATUS
approved

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Last modified August 18 13:06 EDT 2024. Contains 375269 sequences. (Running on oeis4.)