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A383334 as a triangular array

1
21
321
5321
74321
1164321
19854321
2912754321
47209654321
7129138654321
1274420107654321
19170301497654321

A383334 as a square array

123571119294771127191
1234681220294470
1234579132030
12345681014
12345679
1234567
123456
12345
1234
123
12
1
123571119294771127191
1234681220294470
1234579132030
12345681014
12345679
1234567
123456
12345
1234
123
12
1