A249279 - OEIS

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A249279

Inverse permutation of A249278 (such that first digit of a(n+1) has parity of a(n)).

0, 7, 1, 8, 2, 9, 3, 10, 4, 11, 12, 15, 16, 19, 20, 23, 24, 27, 28, 31, 5, 6, 13, 14, 17, 18, 21, 22, 25, 26, 32, 35, 36, 39, 40, 43, 44, 47, 48, 51, 29, 30, 33, 34, 37, 38, 41, 42, 45, 46, 52, 55, 56, 59, 60, 63, 64, 67, 68, 71, 49, 50, 53, 54, 57, 58, 61, 62, 65, 66, 72, 75, 76

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Index entries for sequences that are permutations of the natural numbers

PROG

(PARI) N=100; vector(N, n, t=0; for(i=1, #A249278, A249278[i]==n-1&&(t=i)&&break); t-1)

(Haskell)

import Data.List (elemIndex); import Data.Maybe (fromJust)

a249279 = fromJust . (`elemIndex` a249278_list)

-- Reinhard Zumkeller, Oct 27 2014