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A299740 as a triangular array

1
22
484
832328
1612822012816
325121578157851232
642048113032111111303204864
128819281105280642280642811058192128
2563276858203237425246896530374252458203232768256
512131072

A299740 as a square array

1248163264128256512
28321285122048819232768131072
43222015781130381105582032
81281578211112806423742524
16512113032806426896530
322048811053742524
648192582032
12832768
256
1248163264128256512
28321285122048819232768131072
43222015781130381105582032
81281578211112806423742524
16512113032806426896530
322048811053742524
648192582032
12832768
256