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A072738
X-projection of the tabular N X N -> N bijection A072733.
5
0, 1, 1, 2, 2, 0, 2, 3, 3, 1, 3, 4, 4, 2, 0, 3, 4, 5, 5, 3, 1, 4, 5, 6, 6, 4, 2, 0, 4, 5, 6, 7, 7, 5, 3, 1, 5, 6, 7, 8, 8, 6, 4, 2, 0, 5, 6, 7, 8, 9, 9, 7, 5, 3, 1, 6, 7, 8, 9, 10, 10, 8, 6, 4, 2, 0, 6, 7, 8, 9, 10, 11, 11, 9, 7, 5, 3, 1, 7, 8, 9, 10, 11, 12, 12, 10, 8, 6, 4, 2, 0, 7, 8, 9, 10, 11, 12, 13
OFFSET
0,4
PROG
(Scheme) (define (A072738 n) (A025581 (A072732 n)))
CROSSREFS
The Y-projection is A072739. Composition of A025581 & A072732. A072785(n) = A072781(n)-A072738(n).
Sequence in context: A228430 A241533 A370885 * A165316 A362991 A215976
KEYWORD
nonn,tabl
AUTHOR
Antti Karttunen, Jun 12 2002
STATUS
approved