A072740 X-projection of the tabular N X N -> N bijection A072734.

0, 1, 0, 2, 0, 0, 4, 3, 0, 0, 6, 5, 1, 0, 0, 8, 7, 2, 1, 0, 0, 10, 9, 3, 1, 1, 0, 0, 12, 11, 5, 4, 1, 1, 0, 0, 14, 13, 7, 6, 2, 1, 1, 0, 0, 16, 15, 9, 8, 3, 2, 1, 1, 0, 0, 18, 17, 11, 10, 4, 2, 2, 1, 1, 0, 0, 20, 19, 13, 12, 6, 5, 2, 2, 1, 1, 0, 0, 22, 21, 15, 14, 8, 7, 3, 2, 2, 1, 1, 0, 0, 24, 23

Offset: 0

Author

Antti Karttunen, Jun 12 2002

Keywords

• nonn
• tabl

Crossrefs

The Y-projection is A072741. Composition of A025581 and A072735. A072783(n) = A072740(n)-A072736(n).

Programs

Scheme

(define (A072740 n) (A025581 (A072735 n)))