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A171608 as a triangular array

1
20
020
0300
00300
004000
0004000
00050000
000050000
0000600000
00000600000
000007000000
0000007000000

A171608 as a square array

1200000000000
023000000000
00340000000
0004500000
000056000
00000670
0000007
000000
00000
0000
000
00
0
1200000000000
023000000000
00340000000
0004500000
000056000
00000670
0000007
000000
00000
0000
000
00
0