Square array read by antidiagonals: form the Euler-Seidel matrix for the sequence {k!} and then divide column k by k!.
A143409
Square array read by antidiagonals: form the Euler-Seidel matrix for the sequence {k!} and then divide column k by k!.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =5a(4) =3a(5) =1a(6) =16a(7) =11a(8) =4a(9) =1a(10) =65a(11) =49a(12) =19a(13) =5a(14) =1a(15) =326a(16) =261a(17) =106a(18) =29a(19) =6a(20) =1a(21) =1957a(22) =1631a(23) =685a(24) =193a(25) =41a(26) =7a(27) =1a(28) =13700a(29) =11743
External references
- oeis: A143409