A077127 a(0) = 1, a(1) = 2, a(n) = smallest number other than n, non-coprime to n and not occurring earlier.

1, 2, 4, 6, 8, 10, 3, 14, 12, 15, 5, 22, 9, 26, 7, 18, 20, 34, 16, 38, 24, 27, 11, 46, 21, 30, 13, 33, 32, 58, 25, 62, 28, 36, 17, 40, 39, 74, 19, 42, 35, 82, 44, 86, 48, 50, 23, 94, 45, 56, 52, 54, 60, 106, 51, 65, 49, 63, 29, 118, 55, 122, 31, 57, 66, 70, 64, 134, 72, 75, 68

Offset

0,2

Comments

Permutation of natural numbers.

Links

Paul Tek, Table of n, a(n) for n = 0..10000

Crossrefs

Sequence in context: A083167 A338741 A115950 * A082191 A319806 A055952

Adjacent sequences: A077124 A077125 A077126 * A077128 A077129 A077130

Keyword

nonn

Author

Amarnath Murthy, Oct 29 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 30 2003

Status

approved