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A143996 as a triangular array

0
00
010
1111
12221
123321
1334331
23455432
245666542
2467777642
25688988652
3579101010109753
36810111212121110863
36911121314

A143996 as a square array

00011112222333
0112233445566
012334566789
1234567891011
1235678101112
134679101213
13578101214
24681012
246911
25710
258
36
3
00011112222333
0112233445566
012334566789
1234567891011
1235678101112
134679101213
13578101214
24681012
246911
25710
258
36
3