Number of length 6+6 0..n arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five.
A249261
Number of length 6+6 0..n arrays with every seven consecutive terms having five times the sum of some two elements equal to two times the sum of the remaining five.
Terms
- a(0) =2a(1) =395a(2) =2048a(3) =10673a(4) =37442a(5) =108563a(6) =678228a(7) =2808885a(8) =8984618a(9) =24611755a(10) =56750678a(11) =122018031a(12) =231977010a(13) =516600553a(14) =1008739178a(15) =1888146937a(16) =3233478724a(17) =5370329949a(18) =8379543498a(19) =12801884207a(20) =20101322572a(21) =30981729383a(22) =45635449254
External references
- oeis: A249261