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A265421 as a triangular array

1
01
001
0001
00041
0001481
00072255841
000187088622680961
000197902626269068250094921272961
000121089807017652689117840778362809933702122418561
0006728314236

A265421 as a square array

10000000000
1000000000
100000000
1417119167
148225870879026210898028314236
158486226262690687017652689
1809625009492117840778362
11272968099337021
12241856
1
10000000000
1000000000
100000000
1417119167
148225870879026210898028314236
158486226262690687017652689
1809625009492117840778362
11272968099337021
12241856
1