login

A181117 as a triangular array

1
21
201
8201
20001
422001
2000001
168020001
802000001
4200200001
20000000001
1648202000001
2000000000001
42000020000001

A181117 as a square array

1228242168421624
1020208020402
100200200800
10002000200
1000020000
100000200
10000002
1000000
100000
10000
1000
100
10
1
1228242168421624
1020208020402
100200200800
10002000200
1000020000
100000200
10000002
1000000
100000
10000
1000
100
10
1