Number of length 4+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.
A249259
Number of length 4+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) =473458a(7) =1549383a(8) =4115924a(9) =9724073a(10) =20072810a(11) =39126419a(12) =69504286a(13) =135735757a(14) =240442240a(15) =411187489a(16) =656842376a(17) =1023699903a(18) =1518990784a(19) =2216442121a(20) =3279686920a(21) =4777949885a(22) =6709372256a(23) =9308235433
External references
- oeis: A249259