OFFSET
0,3
COMMENTS
Columns are the number of maximal chains to multiples of J in the graded poset of (2 X n) antimagic squares. See Stanley. - Arnav Krishna, Jan 13 2023
REFERENCES
R. P. Stanley, Enumerative Combinatorics, Vol I, Exercise 53, p. 540.
LINKS
Seiichi Manyama, Antidiagonals n = 0..49, flattened
EXAMPLE
Square array begins:
1, 1, 1, 1, 1, ...
2, 2, 4, 12, 48, ...
3, 4, 36, 900, 45360, ...
4, 8, 400, 94080, 60614400, ...
5, 16, 4900, 11988900, 114144030000, ...
6, 32, 63504, 1704214512, 249344297250048, ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Seiichi Manyama, Mar 02 2019
STATUS
approved