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

0,2

Comments

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

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

Links

Table of n, a(n) for n=0..71.

Formula

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

Crossrefs

Sequence in context: A199855 A127914 A218035 * A219159 A213928 A065189

Adjacent sequences: A090961 A090962 A090963 * A090965 A090966 A090967

Keyword

nonn

Author

Giovanni Teofilatto, Feb 29 2004

Extensions

More terms from David Wasserman, Feb 23 2006

Status

approved