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A300855 Inverse of Knuth's base-5 based twisted permutation A220952 of the nonnegative integers. 4
0, 1, 2, 3, 4, 17, 16, 15, 14, 5, 18, 11, 12, 13, 6, 19, 10, 9, 8, 7, 20, 21, 22, 23, 24, 97, 96, 95, 94, 85, 48, 49, 50, 51, 84, 47, 54, 53, 52, 83, 46, 55, 56, 57, 82, 37, 36, 35, 34, 25, 98, 91, 92, 93, 86, 43, 66, 65, 64, 79, 44, 61, 62, 63, 80, 45, 60, 59, 58, 81 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..15624

FORMULA

A220952(9) = 5, therefore a(5) = 9.

PROG

(PARI) concat(0, Vec(vecsort(A220952, , 1))) \\ where A220952 is a vector of some N initial terms of that sequence without the leading a(0) = 0 (use ...[^1] to exclude the first element if needed) and such that these N values contain exactly all integers from 1 to N, e.g., N = 120.

CROSSREFS

See A220952 for the inverse permutation, A300857 and its inverse A300856 for the base-7 variant.

Sequence in context: A333802 A229546 A343494 * A353164 A333835 A178683

Adjacent sequences: A300852 A300853 A300854 * A300856 A300857 A300858

KEYWORD

nonn,look

AUTHOR

M. F. Hasler, Mar 13 2018

STATUS

approved

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Last modified November 26 14:22 EST 2022. Contains 358362 sequences. (Running on oeis4.)