Number of pairs of cycles of cardinality at least 3.
A052519
Number of pairs of cycles of cardinality at least 3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =80a(7) =840a(8) =7896a(9) =76608a(10) =793152a(11) =8838720a(12) =106096320a(13) =1368956160a(14) =18928615680a(15) =279530334720
External references
- oeis: A052519