A077158 Prime(1) composite numbers, followed by composite(1) prime numbers, prime(2) composite numbers, followed by composite(2) prime numbers, ...

4, 6, 2, 3, 5, 7, 8, 9, 10, 11, 13, 17, 19, 23, 29, 12, 14, 15, 16, 18, 31, 37, 41, 43, 47, 53, 59, 61, 20, 21, 22, 24, 25, 26, 27, 67, 71, 73, 79, 83, 89, 97, 101, 103, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 44, 45, 46, 48

Offset

1,1

Links

Table of n, a(n) for n=1..69.

Crossrefs

Sequence in context: A106143 A359283 A255524 * A059854 A155991 A184083

Adjacent sequences: A077155 A077156 A077157 * A077159 A077160 A077161

Keyword

easy,nonn

Author

Amarnath Murthy, Oct 31 2002

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 23 2003

Offset changed by Sean A. Irvine, May 08 2025

Status

approved