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A209760 as a triangular array

1
13
138
131121
13113855
131141124144
131141150389377
1311411535331187987
131141153568183835492584
13114115357120846168104476765
1311411535712128

A209760 as a square array

11111111111
3333333333
81111111111111111
2138414141414141
55124150153153153153
144389533568571571
3771187183820842128
98735496168
258410447
6765
11111111111
3333333333
81111111111111111
2138414141414141
55124150153153153153
144389533568571571
3771187183820842128
98735496168
258410447
6765