Improved version of A002686; secondary main diagonal of A324124.
A328885
Improved version of A002686; secondary main diagonal of A324124.
Terms
- a(0) =1a(1) =8a(2) =45a(3) =416a(4) =1685a(5) =31032a(6) =229026a(7) =13856896a(8) =132843888a(9) =6551143600a(10) =672567897859a(11) =346984064352
External references
- oeis: A328885