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A374655
a(n) = (1/3)*A374654(n).
2
1, 2, 8, 40, 320, 3840, 72960, 2188800, 105062400, 8089804800, 1003135795200, 200627159040000, 64802572369920000, 33826942777098240000, 28549939703870914560000, 38970667695783798374400000, 86047234272290626810675200000, 307360720820622118967731814400000
OFFSET
0,2
COMMENTS
a(n+1)/a(n) is an integer for n>=0, so (a(n)) is a divisibility sequence.
MATHEMATICA
w[n_] := Product[LucasL[k] + 1, {k, 0, n}]
(1/3) Table[w[n], {n, 0, 20}]
CROSSREFS
Sequence in context: A111394 A374860 A140363 * A280921 A208962 A351109
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jul 28 2024
STATUS
approved