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A047918 as a triangular array

1
20
600
80016
20000100
12243600648
42000004998
3232032000039936
54027000000362556
4016000380000003624800
11000000000039916690
4896

A047918 as a square array

126820124232544011048
0000240320160096
000360027000
16000320000
100000038000
64800000
49980000
39936000
36255600
36248000
39916690
126820124232544011048
0000240320160096
000360027000
16000320000
100000038000
64800000
49980000
39936000
36255600
36248000
39916690