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A073406 as a triangular array

2
3612
105667296
439684041610752864
2396160281548810517761566728064
16187904022649241610598169622125312212198476032
1304432640020766633984114467696642995605504

A073406 as a square array

236105643968239616016187904013044326400
1267240416281548822649241620766633984
9610752105177610598169611446769664
864156672221253122995605504
80642121984
76032
236105643968239616016187904013044326400
1267240416281548822649241620766633984
9610752105177610598169611446769664
864156672221253122995605504
80642121984
76032