OFFSET
0,4
COMMENTS
Equivalently, the row lengths are a self-conjugate partition of n.
LINKS
Sean A. Irvine, Table of n, a(n) for n = 0..100
Sean A. Irvine, Java program (github)
FORMULA
EXAMPLE
For n = 8; 4+2+1+1 produces 90 tableaux and 3+3+2 produces
42 tableaux. so a(8) = 90+42 = 132.
For n = 5 = 3+1+1 the 6 tableaux are:
123..124..125..135..134..145
4....3....3....2....2....2..
5....5....4....4....5....3..
CROSSREFS
KEYWORD
nonn
AUTHOR
Naohiro Nomoto, Feb 19 2002
EXTENSIONS
Edited by Franklin T. Adams-Watters, Nov 07 2006
STATUS
approved