login

A180339 as a triangular array

1
21
413
8238
1646821
32812162155
641624324255144
12832486484110144377
2566496128168220288377987

A180339 as a square array

1248163264128256
11248163264
33612244896
88163264128
21214284168
5555110220
144144288
377377
987
1248163264128256
11248163264
33612244896
88163264128
21214284168
5555110220
144144288
377377
987