login

A128521 as a triangular array

1
01
111
0111
12211
001211
1332211
00122211
133332211
0-112232211

A128521 as a square array

1010101010
11120303-1
11213131
1122232
112232
11223
1122
112
11
1
1010101010
11120303-1
11213131
1122232
112232
11223
1122
112
11
1