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A052314
Triangle: Matrix square of A051168.
1
1, 2, 1, 1, 1, 0, 1, 2, 0, 0, 1, 3, 1, 0, 0, 1, 6, 3, 1, 0, 0, 1, 9, 7, 4, 1, 0, 0, 1, 18, 18, 14, 5, 1, 0, 0, 1, 30, 38, 36, 18, 6, 1, 0, 0, 1, 56, 84, 96, 60, 28, 7, 1, 0, 0, 1, 99, 174, 227, 171, 98, 33, 8, 1, 0, 0, 1, 186, 372, 552, 486, 332, 140, 47, 9, 1, 0, 0, 1, 335, 755
OFFSET
0,2
EXAMPLE
1; 2,1; 1,1,0; 1,2,0,0; 1,3,1,0,0; ...
CROSSREFS
Sequence in context: A087810 A345416 A321755 * A271606 A093718 A278839
KEYWORD
nonn,tabl
AUTHOR
Christian G. Bower, Dec 15 1999
STATUS
approved