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A004172 as a triangular array

1
0-1
101
0-210
-3050-3
10170-280
140-410-1550
2550-1260300-51
020730-3410016830-3960
550-610-382270628810-31031
072930-10010910-710929569
0

A004172 as a square array

1010-311425505500
-10-20000207307293
11517-4-1260-60
00010-34101-1001
-3-28030000
0-15501683-3822791
0-5000
1-39662881-7
001
-310310
929569
1010-311425505500
-10-20000207307293
11517-4-1260-60
00010-34101-1001
-3-28030000
0-15501683-3822791
0-5000
1-39662881-7
001
-310310
929569