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A331451 as a triangular array

1
40
1001
18600
357701
56240000
9036189001
120901000000
176132442200001
27616800000000
3772341173901300001
47637898000000000
5856001501051500000001
848672128480000000000

A331451 as a square array

141018355690120176276377476585848
0067243690132168234378600672
1070181044011798150128
0009022039010548
10000000150
0000013000
10000000
0000000
100000
00000
1000
000
10
0
141018355690120176276377476585848
0067243690132168234378600672
1070181044011798150128
0009022039010548
10000000150
0000013000
10000000
0000000
100000
00000
1000
000
10
0