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A027912
T(2n-1,n-2), T given by A027907.
0
1, 5, 28, 156, 880, 5005, 28665, 165104, 955434, 5550755, 32355917, 189147400, 1108476720, 6510243495, 38308997100, 225810489168, 1333057076890
OFFSET
2,2
CROSSREFS
Sequence in context: A015536 A271808 A005785 * A378462 A243669 A327999
KEYWORD
nonn
STATUS
approved