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A246381 as a triangular array

1
11
321
121331
73803441
5847012967051
58897680346381612561
731841005194943212139187620371
1089057157104081026821772834294380830881
190196322871786515455072435426075179283406705644491

A246381 as a square array

1131273584588973184108905719019632
1213807017680100519157104028717865
133429634634943281026815455072
1470816121392177284354260
15125187634294751792
16203380883406
173087056
18444
19
1
1131273584588973184108905719019632
1213807017680100519157104028717865
133429634634943281026815455072
1470816121392177284354260
15125187634294751792
16203380883406
173087056
18444
19
1