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A064644 as a triangular array

1
21
156
2221131
14584104105
6316305624122111
1126325003558428546024603
39469394683757333180265601830592071
178939157243230496293794342944375058388869388870
4327322

A064644 as a square array

12122163113946914327322
15214563012633946878939
61384562250037573157243
1104412355833180230496
105211428526560293794
1460218305342944
46039207375058
1388869
388870
12122163113946914327322
15214563012633946878939
61384562250037573157243
1104412355833180230496
105211428526560293794
1460218305342944
46039207375058
1388869
388870