A266122 a(n) = index of n in A266121 or 0 if n is not present in that sequence.

1, 5, 2, 4, 3, 10, 8, 6, 7, 17, 13, 9, 14, 11, 21, 16, 20, 35, 24, 15, 41, 29, 27, 12, 26, 18, 25, 23, 37, 30, 32, 34, 33, 50, 53, 36, 52, 77, 22, 19, 60, 65, 46, 31, 39, 95, 38, 28, 43, 63, 47, 40, 48, 78, 42, 76, 59, 71, 54, 81, 45, 86, 74, 51, 73, 117, 109, 111, 110, 83, 80, 70, 113, 145, 55, 79, 151, 82, 101, 49

Offset

1,2

Comments

If A266121 is really a permutation of natural numbers, then this sequence is also, and no hypothetical zero-values are ever needed.

Links

Antti Karttunen, Table of n, a(n) for n = 1..8189

Index entries for sequences that are permutations of the natural numbers

Prog

(Scheme, with code for A266121 defined with defineperm1-macro also required)
(define (A266122 n) (A266121 (- n))) ;; This returns inverse values of A266121 from its hidden cache.

Crossrefs

Inverse: A266121 (with provisions, see comment section).

Sequence in context: A111145 A249920 A021660 * A064853 A177148 A188739

Adjacent sequences: A266119 A266120 A266121 * A266123 A266124 A266125

Keyword

nonn,base

Author

Antti Karttunen, Dec 23 2015

Status

approved