OFFSET
2,8
COMMENTS
This sequence can be derived from A133687 and A333159. In particular, if w(n) is the inverse Euler transform of column k of A133687 and s(n) is the inverse Euler transform of column k of A333159, then 2*T(2*n+1,k) = w(2*n+1) + s(2*n+1) and 2*T(2*n,k) = w(2*n) + s(2*n) - w(n) + T(n,k). - Andrew Howroyd, Apr 03 2020
LINKS
Andrew Howroyd, Table of n, a(n) for n = 2..154
B. D. McKay and E. Rogoyski, Latin squares of order ten, Electron. J. Combinatorics, 2 (1995) #N3.
EXAMPLE
Triangle begins:
1;
1, 1;
1, 1, 1;
1, 2, 1, 1;
1, 5, 4, 1, 1;
1, 13, 14, 4, 1, 1;
1, 38, 129, 41, 7, 1, 1;
1, 149, 1980, 1981, 157, 8, 1, 1;
...
CROSSREFS
KEYWORD
AUTHOR
Brendan McKay and Eric Rogoyski
EXTENSIONS
More terms from Eric Rogoyski, May 15 1997
Name clarified by Andrew Howroyd, Sep 05 2018
Terms a(55) and beyond from Andrew Howroyd, Apr 03 2020
STATUS
approved