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A306646 as a triangular array

2
31
403
5024
60037
7003211
80004518
900040529
10000053747
1100005071076
120000060412123
1300000604317199

A306646 as a square array

2345678910111213
10000000000
3200000000
433000000
72440000
11505500
1853066
297700
471044
76123
12317
199
2345678910111213
10000000000
3200000000
433000000
72440000
11505500
1853066
297700
471044
76123
12317
199