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A303868 as a triangular array

1
11
111
2321
37621
620231131
105080511731
201362852521092641
3634696611196522003641
7290131884782362315023525051
1362264101331911618489994931205706551

A303868 as a square array

11123610203672136
113720501363469012264
1262380285966318810133
1211512521119478219116
1317109652362318489
132620015029949
14363523120
1450570
1565
15
1
11123610203672136
113720501363469012264
1262380285966318810133
1211512521119478219116
1317109652362318489
132620015029949
14363523120
1450570
1565
15
1