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A286245 as a triangular array

1
23
433
75310
1153103
168510321
2285103213
2912514321336
371281432133610
46178145213361021
561781452133610213
672312195273361021378
7923121952733610213783

A286245 as a square array

1247111622293746566779
335588121217172323
3335558881212
10101010141414141919
333335555
2121212121212727
3333333
363636363636
1010101010
21212121
333
7878
3
1247111622293746566779
335588121217172323
3335558881212
10101010141414141919
333335555
2121212121212727
3333333
363636363636
1010101010
21212121
333
7878
3