OFFSET
0,18
COMMENTS
This sequence can be derived from A167625 by inverse Euler transform.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..405 (first 28 antidiagonals)
FORMULA
Column k is the inverse Euler transform of column k of A167625.
EXAMPLE
Array begins:
=========================================================
n\k | 0 1 2 3 4 5 6 7 8
----+----------------------------------------------------
0 | 1 1 1 1 1 1 1 1 1 ...
1 | 1 0 1 0 1 0 1 0 1 ...
2 | 0 1 1 2 2 3 3 4 4 ...
3 | 0 0 1 0 4 0 9 0 17 ...
4 | 0 0 1 5 10 26 47 91 149 ...
5 | 0 0 1 0 28 0 291 0 1934 ...
6 | 0 0 1 17 97 639 2789 12398 44821 ...
7 | 0 0 1 0 359 0 35646 0 1631629 ...
8 | 0 0 1 71 1635 40264 622457 8530044 89057367 ...
9 | 0 0 1 0 8296 0 14019433 0 6849428873 ...
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Andrew Howroyd, Mar 18 2020
STATUS
approved