Number of n-node triangulations of sphere in which every node has degree >= 4.
A000103
Number of n-node triangulations of sphere in which every node has degree >= 4.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =2a(5) =5a(6) =12a(7) =34a(8) =130a(9) =525a(10) =2472a(11) =12400a(12) =65619a(13) =357504a(14) =1992985a(15) =11284042a(16) =64719885a(17) =375126827a(18) =2194439398a(19) =12941995397a(20) =76890024027a(21) =459873914230
External references
- oeis: A000103