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A074183
Duplicate of A039960.
0
1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9, 10, 11, 11, 12, 13, 14, 14, 15, 16, 17, 18, 18, 19, 20
OFFSET
1,4
CROSSREFS
Sequence in context: A247784 A249243 A066530 * A039960 A105235 A073719
KEYWORD
dead
STATUS
approved