login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A293301 as a triangular array

1
10
110
1140
113180
113121200
11313668400
113137445079200
11313735103510756000
11313735004130327608870400
1131373501404038430335160108864000
113

A293301 as a square array

111111111111
01111111111
0433333333
018121313131313
01206674737373
0840450510500501
07920351041304040
0756003276038430
0887040335160
010886400
0
111111111111
01111111111
0433333333
018121313131313
01206674737373
0840450510500501
07920351041304040
0756003276038430
0887040335160
010886400
0