login
A090298
Permutation of natural numbers generated by 5-row array shown below.
11
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)
-----------------------------------------------------------
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
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Jan 25 2004
EXTENSIONS
More terms from Ray Chandler, Feb 01 2004
STATUS
approved