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A337974 as a triangular array

1
39
72149
123684144
2266154264484
3090210360660900
47141329564103414102209
611834277321342183028673721
85255595102018702550399551857225
11333979113562486339053116893960512769

A337974 as a square array

137122230476185113
921366690141183255339
4984154210329427595791
14426436056473210201356
4846601034134218702486
9001410183025503390
2209286739955311
372151856893
72259605
12769
137122230476185113
921366690141183255339
4984154210329427595791
14426436056473210201356
4846601034134218702486
9001410183025503390
2209286739955311
372151856893
72259605
12769