Number of length 2+4 0..n arrays with no pair in any consecutive five terms totalling exactly n.
A246739
Number of length 2+4 0..n arrays with no pair in any consecutive five terms totalling exactly n.
Terms
- a(0) =2a(1) =16a(2) =260a(3) =1096a(4) =5430a(5) =15960a(6) =47432a(7) =109552a(8) =246890a(9) =483520a(10) =920652a(11) =1606776a(12) =2735390a(13) =4392136a(14) =6907280a(15) =10419040a(16) =15447762a(17) =22202352a(18) =31455380a(19) =43507240a(20) =59453702a(21) =79710136a(22) =105775320a(23) =138205776a(24) =178991930a(25) =228860320a(26) =290390492
External references
- oeis: A246739