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A084537
Duplicate of A002061.
0
1, 1, 3, 7, 13, 21, 31, 43, 57, 73, 91, 111, 133, 157, 183, 211, 241, 273, 307, 343, 381, 421
OFFSET
0,3
CROSSREFS
Sequence in context: A115298 A161206 A025728 * A002061 A247890 A353887
KEYWORD
dead
STATUS
approved