A091578 Permutation of primes generated by 2-rowed array shown below.

2, 7, 3, 11, 5, 19, 13, 23, 17, 37, 29, 41, 31, 53, 43, 59, 47, 71, 61, 73, 67, 89, 79, 97, 83, 107, 101, 109, 103, 131, 113, 137, 127, 151, 139, 157, 149, 173, 163, 179, 167, 193, 181, 197, 191, 223, 199, 227, 211, 239, 229, 241, 233, 263, 251, 257

Offset: 1

Author

Giovanni Teofilatto, Mar 05 2004; corrected and extended Oct 13 2006, Oct 15 2006

Keywords

• nonn

Comments

2 7 11 19 23 37 41 53 59 ... (A060191)

3 5 13 17 29 31 43 47 61 ... (A060192)

Crossrefs

Cf. A090964.

Formula

a(n) = A000040(A090964(n)). a(n) = A000040(a(k+8) = a(k)+8).