A127307 Positions of Dyck words beginning as UUD (110) in A014486/A063171.

3, 6, 7, 14, 15, 16, 17, 18, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141

Offset: 1

Author

Antti Karttunen, Jan 16 2007

Keywords

• nonn

Programs

Scheme

(define (A127307 n) (A072764bi (A072795 (A072771 n)) (A072772 n)))
(define (*A127307 s) (cons (cons '() (car s)) (cdr s))) ;; Corresponding function acting on S-expressions.

Formula

a(n) = A072764bi(A072795(A072771(n)),A072772(n)).