Number of permutations of [n] with four ordered cycles such that equal-sized cycles are ordered with increasing least elements.
A285855
Number of permutations of [n] with four ordered cycles such that equal-sized cycles are ordered with increasing least elements.
Terms
- a(0) =1a(1) =40a(2) =430a(3) =6300a(4) =62601a(5) =706608a(6) =8985560a(7) =107911760a(8) =1439518696a(9) =20364348576a(10) =304923257184
External references
- oeis: A285855