.A(3,1)=3:/\
. /\ /\ / \
. /\/ \ / \/\ / \ .
.
.A(3,2)=4:/\
. /\ /\ /\/\ / \
. /\/ \ / \/\ / \ / \ .
.
.A(3,3)=5:/\
. /\ /\ /\/\ / \
. /\/\/\ /\/ \ / \/\ / \ / \ .
.
方阵A(n,k)开始:
1, 1, 1, 1, 1, 1, 1, 1, ...
0, 1, 1, 1, 1, 1, 1, 1, ...
0, 1, 2, 2, 2, 2, 2, 2, ...
0, 3, 4, 5, 5, 5, 5, 5, ...
0, 5, 12, 13, 14, 14, 14, 14, ...
0, 13, 31, 40, 41, 42, 42, 42, ...
0, 31, 90, 119, 130, 131, 132, 132, ...
0, 71, 264, 376, 414, 427, 428, 429, ...