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A049404 as a triangular array

1
21
261
020121
04080201
040360220301
0011201680490421
00224095205600952561
0022404032048720151201680721
000123200332640184800352802760901
0002464001786400

A049404 as a square array

12200000000
1620404000000
1128036011202240224000
1202201680952040320123200246400
1304905600487203326401786400
14295215120184800
156168035280
1722760
190
1
12200000000
1620404000000
1128036011202240224000
1202201680952040320123200246400
1304905600487203326401786400
14295215120184800
156168035280
1722760
190
1