A255057 The trunk of number-of-runs beanstalk, halved: a(n) = A255056(n)/2.

0, 1, 2, 3, 5, 6, 7, 9, 11, 13, 14, 15, 16, 18, 21, 23, 25, 27, 29, 30, 31, 32, 34, 37, 39, 42, 45, 47, 48, 50, 53, 55, 57, 59, 61, 62, 63, 64, 66, 69, 71, 74, 76, 78, 81, 84, 87, 90, 93, 95, 96, 98, 101, 103, 106, 109, 111, 112, 114, 117, 119, 121, 123, 125, 126, 127

Offset

0,3

Links

Antti Karttunen, Table of n, a(n) for n = 0..16142

Formula

a(n) = A255056(n)/2.

a(n) = A255067(A255122(n)).

Prog

(Scheme, two versions)
(define (A255057 n) (/ (A255056 n) 2))
(define (A255057 n) (A255067 (A255122 n)))

Crossrefs

First differences: A255337.

Characteristic function: A255339.

Cf. A255056, A255058, A255067, A255122, A255125, A255126, A255328, A255329, A255330, A255338.

Sequence in context: A114148 A349690 A218442 * A349150 A354525 A340610

Adjacent sequences: A255054 A255055 A255056 * A255058 A255059 A255060

Keyword

nonn

Author

Antti Karttunen, Feb 14 2015

Status

approved