OFFSET
1,1
COMMENTS
Subsequence of A050758.
LINKS
G. L. Honaker, Jr. and C. Caldwell, 1111211111
EXAMPLE
a(6) can be represented as follows:
......1
.....1 1
....1 3 1
...1 3 3 1
..1 3 7 3 1
.1 3 3 3 3 1
1 1 1 1 1 1 1
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Felix Fröhlich, Aug 22 2015
STATUS
approved