A090298 Permutation of natural numbers generated by 5-row array shown below.

1, 9, 2, 11, 8, 3, 19, 12, 7, 4, 21, 18, 13, 6, 5, 29, 22, 17, 14, 10, 31, 28, 23, 16, 15, 39, 32, 27, 24, 20, 41, 38, 33, 26, 25, 49, 42, 37, 34, 30, 51, 48, 43, 36, 35, 59, 52, 47, 44, 40, 61, 58, 53, 46, 45, 69, 62, 57, 54, 50, 71, 68, 63, 56, 55, 79, 72, 67, 64, 60, 81, 78

Offset

1,2

Comments

1 9 11 19 21 29 31 39... (A090771)

2 8 12 18 22 28 32 38... (A090772)

3 7 13 17 23 27 33 37... (A063226)

4 6 14 16 24 26 34 36... (A090773)

5 10 15 20 25 30 35 40... (A008587, excluding initial term)

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For such arrays A_k, here A_5, see a W. Lang comment on A113807, the A_7 case. However, in order to obtain A_5 one should take the last row as the first one after adding a 0 in front (thus getting a permutation of the nonnegative integers). - Wolfdieter Lang, Feb 02 2012

Links

Table of n, a(n) for n=1..72.

Crossrefs

Cf. A088520, A090243, A092260, A113807.

Sequence in context: A197812 A146492 A266565 * A248315 A256658 A094581

Adjacent sequences: A090295 A090296 A090297 * A090299 A090300 A090301

Keyword

easy,nonn

Author

Giovanni Teofilatto, Jan 25 2004

Extensions

More terms from Ray Chandler, Feb 01 2004

Status

approved