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A012266
Duplicate of A009468.
0
0, 0, 2, 6, 22, 100, 428, 1008, 12504, 325152, 5509368, 85326120, 1301444520
OFFSET
0,3
CROSSREFS
Sequence in context: A012272 A009789 A012271 * A009468 A088819 A177478
KEYWORD
dead
STATUS
approved