A083932 A014486-encoding of the Catalan mountain ranges with only even-length slopes allowed.

0, 12, 204, 240, 3276, 3312, 3852, 3888, 4032, 52428, 52464, 53004, 53040, 53184, 61644, 61680, 62220, 62256, 62400, 64524, 64560, 64704, 65280, 838860, 838896, 839436, 839472, 839616, 848076, 848112, 848652, 848688, 848832, 850956, 850992

Offset: 0

Author

Antti Karttunen, May 13 2003

Keywords

• nonn

Comments

Subset of totally balanced binary strings (A014486) with only even runs of either bit 0 or 1 occurring. See A083933.

Links

• Index entries for encodings of plane rooted trees

Crossrefs

Same sequence in binary: A083933, indices to A014486: A083934.

Permutation of A080316 from which this differs first time at the sixth term, with a(6)=3852, while A080316(6)=4032.

Formula

a(n) = A008585(A083931(n)), i.e. 3*A083931(n).