Number of length n+5 0..4 arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
A249081
Number of length n+5 0..4 arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
Terms
- a(0) =5005a(1) =8805a(2) =15493a(3) =27213a(4) =47645a(5) =83045a(6) =143925a(7) =263405a(8) =480725a(9) =874421a(10) =1584425a(11) =2858305a(12) =5130445a(13) =9561325a(14) =17773565a(15) =32945477a(16) =60874349a(17) =112077225a(18) =205513125a(19) =386804645a(20) =726595221a(21) =1361924833a(22) =2546660077a(23) =4749273385a(24) =8830446345
External references
- oeis: A249081