Third diagonal (T(n,2)) of triangle in A228340.
A228341
Third diagonal (T(n,2)) of triangle in A228340.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =47a(4) =291a(5) =2084a(6) =16963a(7) =154751a(8) =1564473a(9) =17363954a(10) =209931921a(11) =2746478927a(12) =38660636899a(13) =582656032412
External references
- oeis: A228341