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A278716 as a triangular array

1
1818
818
5115
1811118
141414141414
16116116116
27271272712727
511111115
22222222222222222222
721117217211172
1313131311313113131313

A278716 as a square array

11885181416275227213
1811114127122113
81114161122113
5114127122113
18141627122721
1411122113
16271227213
2712211
522113
22113
7213
13
11885181416275227213
1811114127122113
81114161122113
5114127122113
18141627122721
1411122113
16271227213
2712211
522113
22113
7213
13