Number of length 5+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
A249090
Number of length 5+5 0..n 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) =22a(1) =243a(2) =5964a(3) =47645a(4) =211034a(5) =1054347a(6) =3535850a(7) =9493535a(8) =25153046a(9) =56497393a(10) =112531790a(11) =220767937a(12) =396410714a(13) =663326409a(14) =1099809388a(15) =1725034343a(16) =2589206092a(17) =3857810135a(18) =5551077540a(19) =7742041245a(20) =10743080836a(21) =14544778639
External references
- oeis: A249090