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A363395
a(n) = n * Clausen(n, 1) / Clausen(n, 0).
2
0, 2, 6, 2, 60, 2, 42, 2, 120, 6, 66, 2, 5460, 2, 6, 2, 4080, 2, 2394, 2, 660, 2, 138, 2, 10920, 10, 6, 18, 1740, 2, 14322, 2, 8160, 2, 6, 2, 11515140, 2, 6, 2, 54120, 2, 1806, 2, 1380, 6, 282, 2, 371280, 14, 330, 2, 3180, 2, 7182, 2, 3480, 2, 354, 2, 113573460
OFFSET
0,2
FORMULA
a(n) = n * A160014(n, 1) / A160014(n, 0).
MAPLE
# Using function 'Clausen' from A160014.
a := n -> n * Clausen(n, 1) / Clausen(n, 0):
seq(a(n), n = 0..60);
CROSSREFS
KEYWORD
nonn
AUTHOR
_Peter Luschny_, Jun 08 2023
STATUS
approved