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A166291 as a triangular array

1
01
101
1201
22301
363401
510124501
82022205601
13365240306701
216610410965427801
3411821424020098568901
552104215494813351407291001
89370

A166291 as a square array

101123581321345589
1022610203666118210370
1033122252104214421
10442040109240549
10553065200481
10664298335
107756140
108872
1099
1010
10
1
101123581321345589
1022610203666118210370
1033122252104214421
10442040109240549
10553065200481
10664298335
107756140
108872
1099
1010
10
1