%I #6 Mar 30 2012 18:39:59
%S 1,5,2,7,4,3,11,8,6,13,10,9,17,14,12,19,16,15,23,20,18,25,22,21,29,26,
%T 24,31,28,27,35,32,30,37,34,33,41,38,36,43,40,39,47,44,42,49,46,45,53,
%U 50,48,55,52,51,59,56,54,61,58,57,65,62,60,67,64,63,71,68,66,73,70,69
%N Permutation of natural numbers generated by 3-rowed array shown below.
%C 1 5 7 11 13 17 19 23 25 29 31 35 37 41 43...
%C 2 4 8 10 14 16 20 22 26 28 32 34 38 40 44...
%C 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45...
%D M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
%D Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997
%Y Cf. A090243, A090298, A092260, A113807.
%K easy,nonn
%O 1,2
%A _Giovanni Teofilatto_, Nov 14 2003
%E Corrected and extended by _Ray Chandler_, Nov 16 2003