OFFSET
1,2
COMMENTS
This is the Euler transform of A000105, almost by definition. - Andrey Zabolotskiy , Jul 12 2024
FORMULA
EXAMPLE
For n = 4, partitions are [4],[3,1],[2,2],[2,1,1],[1,1,1,1].
There are 1,1,2,5 polyominoes for sizes 1,2,3,4.
So a(4) = 5 + 2 + 1 + 1 + 1 = 10.
CROSSREFS
KEYWORD
nonn
AUTHOR
Harold Mikula Quilty, Jul 06 2024
EXTENSIONS
a(13)-a(14) from Harold Mikula Quilty, Jul 11 2024
STATUS
approved