OFFSET
1,4
LINKS
Eric Weisstein's World of Mathematics, s-Cluster
EXAMPLE
Triangle begins:
1, 1;
1, 13, 2;
1, 218, 208, 78, 6, 1;
1, 11506, 21172, 20262, 9560, 2593, 408, 32, 2;
...
CROSSREFS
KEYWORD
nonn,tabf,more
AUTHOR
Eric W. Weisstein, Jul 14 2003
STATUS
approved