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A088255
Duplicate of A075590.
0
4, 6, 30, 420, 2310, 43890, 1138830, 17160990, 300690390, 17100553470
OFFSET
1,1
CROSSREFS
Sequence in context: A248048 A209298 A075590 * A192083 A068720 A068402
KEYWORD
dead
STATUS
approved