Second column (m=2) of triangle A144891 (S1hat(5)).
A144893
Second column (m=2) of triangle A144891 (S1hat(5)).
Terms
- a(0) =1a(1) =5a(2) =55a(3) =360a(4) =3630a(5) =29820a(6) =321300a(7) =3225600a(8) =38808000a(9) =466300800a(10) =6360379200a(11) =89703936000
External references
- oeis: A144893