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A078000
Duplicate of A007909.
0
1, 1, 1, 3, 7, 13, 25, 51, 103, 205, 409, 819, 1639, 3277, 6553, 13107, 26215, 52429, 104857
OFFSET
0,4
CROSSREFS
Sequence in context: A218199 A275788 A169914 * A190569 A007909 A376448
KEYWORD
dead
STATUS
approved