A073193 Number of separate orbits/cycles to which the Catalan bijection A057508 partitions each A000108(n) structures encoded in the range [A014137(n-1)..A014138(n-1)] of the sequence A014486/A063171.

1, 1, 2, 4, 11, 30, 93, 292, 965, 3238, 11126, 38708, 136486, 485820, 1744677, 6310584, 22973793, 84103302, 309429066, 1143487428, 4242631626, 15798011604, 59018856522, 221143860936, 830895360978, 3129747395548, 11816242209260

Offset

0,3

Links

Table of n, a(n) for n=0..26.

Formula

a(n) = (A000108(n)+A073192(n))/2

Crossrefs

Occurs for first time in A073201 as row 168.

Sequence in context: A276145 A148150 A219232 * A148151 A148152 A148153

Adjacent sequences: A073190 A073191 A073192 * A073194 A073195 A073196

Keyword

nonn

Author

Antti Karttunen, Jun 25 2002

Status

approved