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A266118 a(n) = index of n in A266117 or 0 if n is not present in that sequence. 3
1, 2, 3, 4, 5, 8, 9, 11, 12, 6, 7, 10, 14, 18, 23, 22, 19, 15, 16, 26, 21, 20, 27, 13, 31, 17, 37, 30, 28, 25, 59, 24, 39, 33, 70, 40, 41, 48, 47, 38, 35, 29, 74, 44, 64, 54, 53, 32, 45, 56, 49, 50, 34, 36, 51, 61, 62, 55, 52, 57, 42, 58, 66, 63, 43, 60, 75, 69, 68, 76, 77, 46, 73, 67, 85, 83, 94, 78, 71, 65, 89, 98, 136, 79, 119, 100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

It is conjectured that A266117 is not just injective, but also surjective on N, i.e., that it is a true permutation of natural numbers. In that case also this sequence is a true permutation, and no hypothetical zero-values are ever needed.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..12634

Index entries for sequences that are permutations of the natural numbers

PROG

(Scheme, with code for A266117 defined with defineperm1-macro also required)

(define (A266118 n) (A266117 (- n))) ;; This returns inverse values of A266117 from its hidden cache.

CROSSREFS

Inverse: A266117 (with provisions, see comment section).

Sequence in context: A337801 A116214 A161389 * A287802 A214207 A302497

Adjacent sequences:  A266115 A266116 A266117 * A266119 A266120 A266121

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Dec 22 2015

STATUS

approved

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Last modified July 29 17:41 EDT 2021. Contains 346346 sequences. (Running on oeis4.)