Number of length 3+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.
A249258
Number of length 3+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) =393882a(7) =1140003a(8) =2763524a(9) =6079977a(10) =11916130a(11) =22210135a(12) =38245710a(13) =69790045a(14) =117575504a(15) =192194985a(16) =296733696a(17) =448600639a(18) =650294632a(19) =929076457a(20) =1333117720a(21) =1887163485a(22) =2588378000a(23) =3513900317
External references
- oeis: A249258