OFFSET
0,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..100
EXAMPLE
Some solutions for n=4:
..0..1..0..2....0..1..0..1....0..1..2..0....0..1..0..1....0..1..0..1
..3..1..0..2....0..1..0..1....0..1..2..0....0..2..3..1....0..1..0..1
..0..1..0..1....2..1..2..1....0..1..2..0....0..1..0..4....0..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 23 2012
EXTENSIONS
a(0)=1 prepended and terms a(9) and beyond from Andrew Howroyd, May 17 2020
STATUS
approved