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A199881 as a triangular array

1
11
011
0121
00231
001441
0003751
000171161
00004141671
0000111252281
00000525412991
00000116506337101

A199881 as a square array

110000000000
11100000000
1221000000
134310000
14774100
1511141151
1616252516
17224150
182963
1937
110
1
110000000000
11100000000
1221000000
134310000
14774100
1511141151
1616252516
17224150
182963
1937
110
1