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A221632 as a triangular array

1
21
481
837381
161763951761
32787384835758161
64348032149648283014536161
1281486526118210453651047216247495153621
2566206420952931677485633533629167748002003761634841
512

A221632 as a square array

1248163264128256512
183717678734801486562064
1383953848321492611822095293
1176357564828104536516774856
181630145104721633533629
1361624749516774800
1153622003761
163484
1
1248163264128256512
183717678734801486562064
1383953848321492611822095293
1176357564828104536516774856
181630145104721633533629
1361624749516774800
1153622003761
163484
1