Number of length 3+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

A248436

Number of length 3+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

Terms

    a(0) =2a(1) =9a(2) =24a(3) =69a(4) =118a(5) =185a(6) =252a(7) =357a(8) =470a(9) =593a(10) =716a(11) =881a(12) =1046a(13) =1217a(14) =1400a(15) =1621a(16) =1842a(17) =2081a(18) =2320a(19) =2593a(20) =2874a(21) =3161a(22) =3448a(23) =3785a(24) =4126a(25) =4473a(26) =4828a(27) =5213a(28) =5598a(29) =6005

External references