OFFSET
0,3
EXAMPLE
Step=0 -> 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,..
Now any "1" position insert the numbers of Step=0.
Step=1 -> 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,..
Now any "3" positions insert the numbers of Step=1
Step=2 -> 1,1,2,1,2,3,3,1,4,4,5,2,5,6,6,2,7,7,8,3,8,9,9,3,10,..
Now any "5" positions insert the numbers of Step=2
Step=3 -> 1,1,2,1,2,1,3,3,1,4,4,1,5,2,5,6,6,2,2,7,7,8,3,1,8,9,..
And so on.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Paolo P. Lava, Jan 28 2008
STATUS
approved