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A217315 as a triangular array

1
10
110
1200
13200
145000
1595000
1614140000
072028140000
0727484200000
003475904200000
0034109165132000000
000143274297132000000
0001434175714290000000

A217315 as a square array

11111111000000
0123456770000
00259142027343400
000514284875109143143
0000144290165274417
0000042132297571
000000132429
0000000
000000
00000
0000
000
00
0
11111111000000
0123456770000
00259142027343400
000514284875109143143
0000144290165274417
0000042132297571
000000132429
0000000
000000
00000
0000
000
00
0