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

Offset: 0

Author

M. F. Hasler, Oct 24 2014

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 0..10000
• Index entries for sequences that are permutations of the natural numbers

Programs

Haskell

import Data.List (elemIndex); import Data.Maybe (fromJust)
a249279 = fromJust . (`elemIndex` a249278_list)
-- Reinhard Zumkeller, Oct 27 2014

PARI

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