A046997 Number of Baxter permutations: A001183/2.

0, 1, 1, 9, 33, 187, 847, 4911, 25849

Offset

1,4

Links

Table of n, a(n) for n=1..9.

Crossrefs

Sequence in context: A147444 A189179 A146445 * A013488 A186762 A343843

Adjacent sequences: A046994 A046995 A046996 * A046998 A046999 A047000

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved