A268680 Least monotonic left inverse of A268678.

0, 1, 1, 2, 3, 4, 4, 5, 6, 6, 6, 7, 7, 7, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 14, 14, 15, 16, 16, 16, 16, 17, 18, 18, 19, 19, 20, 21, 21, 21, 22, 23, 24, 24, 24, 24, 24, 25, 26, 26, 27, 27, 28, 29, 29, 29, 30, 31, 31, 32, 33, 33, 33, 33, 34, 35, 36, 36, 36, 37, 38, 38, 39, 39, 40, 41, 41, 41, 41, 41, 41, 42, 43, 44

Offset

0,4

Comments

a(n) = number of distinct nonzero values A268395 that occur in range [0 .. n].

Each n occurs A268679(n+1) times.

Links

Antti Karttunen, Table of n, a(n) for n = 0..65537

Formula

Other identities. For all n >= 0:

a(A268678(n)) = n.

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A268680 (LEFTINV-LEASTMONO 0 0 A268678))

Crossrefs

Cf. A268678, A268679, A268395.

Cf. also A268711.

Sequence in context: A370386 A375626 A335572 * A126974 A354459 A089058

Adjacent sequences: A268677 A268678 A268679 * A268681 A268682 A268683

Keyword

nonn

Author

Antti Karttunen, Feb 11 2016

Status

approved