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A038260 as a triangular array

1
66
367236
216648648216
12965184777651841296
7776388807776077760388807776
4665627993669984093312069984027993646656
279936195955258786569797760979776058786561959552279936
1679616

A038260 as a square array

163621612967776466562799361679616
6726485184388802799361959552
366487776777606998405878656
2165184777609331209797760
1296388806998409797760
77762799365878656
466561959552
279936
163621612967776466562799361679616
6726485184388802799361959552
366487776777606998405878656
2165184777609331209797760
1296388806998409797760
77762799365878656
466561959552
279936