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A131074 as a triangular array

1
12
124
1248
013715
00141126
000151642
0000162264
11111283094
12345681646140
1247111622304692232
12481526426494140232464
013715305698

A131074 as a square array

1111000011110
222100012221
44310013443
8741014787
15115115111515
2616626162630
422288224256
643016306498
94464694
14092140
232232
464
1111000011110
222100012221
44310013443
8741014787
15115115111515
2616626162630
422288224256
643016306498
94464694
14092140
232232
464