A126294 Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A125987/A125988.

1, 1, 2, 3, 4, 8, 16, 17, 32, 40, 44, 60, 88, 100

Offset: 0

Author

Antti Karttunen, Jan 02 2007

Keywords

• nonn

Comments

The number of orbits (equivalence classes) to which the square of Vaille's automorphism partitions the set of A000108(n) Dyck paths of semilength n.

Crossrefs

a(2n) = 2*A126291(2n) for n>0.