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A027094
a(n) = A027082(n, 2n-7).
0
1, 3, 9, 31, 105, 352, 1168, 3828, 12396, 39698, 125878, 395686, 1234426, 3825911, 11790893, 36160491, 110429221, 336001043, 1019092233, 3082348295, 9300339633, 28002492673, 84156758459, 252507279805, 756547966323
OFFSET
4,2
CROSSREFS
Sequence in context: A148962 A148963 A027031 * A027033 A027096 A221440
KEYWORD
nonn
STATUS
approved