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A361414
Number of non-abelian indecomposable groups of order n.
2
0, 0, 0, 0, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 7, 0, 2, 0, 2, 1, 1, 0, 6, 0, 1, 2, 1, 0, 1, 0, 33, 0, 1, 0, 4, 0, 1, 1, 5, 0, 2, 0, 1, 0, 1, 0, 23, 0, 2, 0, 2, 0, 6, 1, 5, 1, 1, 0, 3, 0, 1, 1, 200, 0, 1, 0, 2, 0, 1, 0, 19, 0, 1, 1, 1, 0, 2, 0, 24, 8, 1, 0, 3, 0
OFFSET
1,8
LINKS
FORMULA
a(n) = A090751(n) - A069513(n).
EXAMPLE
a(16) = 7 because 1 of the 8 indecomposable groups of order 16 is abelian and 2 of the 9 non-abelian groups of order 16 are decomposable, leaving 7 non-abelian indecomposable groups of order 16.
CROSSREFS
KEYWORD
nonn
AUTHOR
Kevin Lamoreau, Mar 10 2023
STATUS
approved