A085049 a(1) = 1, then the next n numbers are prime if n is composite, else are composite if n is a prime.

1, 4, 6, 8, 9, 10, 2, 3, 5, 7, 12, 14, 15, 16, 18, 11, 13, 17, 19, 23, 29, 20, 21, 22, 24, 25, 26, 27, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42

Offset

1,2

Links

Table of n, a(n) for n=1..66.

Crossrefs

Sequence in context: A249748 A123870 A318708 * A019516 A031977 A225668

Adjacent sequences: A085046 A085047 A085048 * A085050 A085051 A085052

Keyword

easy,nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 20 2003

Status

approved