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A126258 as a triangular array

1
01
211
0321
33531
068841
4614161251
0102030281761
510305058452371
0154080108103683081
61555120188211171983891
0217017530839938226913647101

A126258 as a square array

102030405060
1133661010151521
1258142030405570
13816305080120175
14122858108188308
151745103211399
162368171382
173098269
1838136
1947
110
1
102030405060
1133661010151521
1258142030405570
13816305080120175
14122858108188308
151745103211399
162368171382
173098269
1838136
1947
110
1