OFFSET
1,1
EXAMPLE
a(4)=5 because we can write
..t...t..
..w...h..
f.o.u.r..
......e..
..o.n.e..
and no smaller square suffices.
a(6) = 8:
...........t.w.o.
...........h.....
.....f.o.u.r.....
...s...n...e.....
.f.i.v.e...e.....
...x............. . - Alois P. Heinz, May 06 2015
CROSSREFS
KEYWORD
more,nonn,word
AUTHOR
STATUS
approved