A090964 Permutation of natural numbers generated by 2-rowed array shown below.

1, 4, 2, 5, 3, 8, 6, 9, 7, 12, 10, 13, 11, 16, 14, 17, 15, 20, 18, 21, 19, 24, 22, 25, 23, 28, 26, 29, 27, 32, 30, 33, 31, 36, 34, 37, 35, 40, 38, 41, 39, 44, 42, 45, 43, 48, 46, 49, 47, 52, 50, 53, 51, 56, 54, 57, 55, 60, 58, 61, 59, 64, 62, 65, 63, 68, 66, 69, 67, 72, 70, 73

Offset: 0

Author

Giovanni Teofilatto, Feb 29 2004

Keywords

• nonn

Comments

1 4 5 8 9 12 13 16 17 20...(A042948)

2 3 6 7 10 11 14 15 18 19...(A042964)

Formula

For n > 1, a(n+8) = a(n)+8. - David Wasserman, Feb 23 2006

Extensions

More terms from David Wasserman, Feb 23 2006