Number of length 1+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third.

A248462

Number of length 1+2 0..n arrays with no three consecutive terms having the sum of any two elements equal to twice the third.

Terms

    a(0) =6a(1) =18a(2) =48a(3) =96a(4) =174a(5) =282a(6) =432a(7) =624a(8) =870a(9) =1170a(10) =1536a(11) =1968a(12) =2478a(13) =3066a(14) =3744a(15) =4512a(16) =5382a(17) =6354a(18) =7440a(19) =8640a(20) =9966a(21) =11418a(22) =13008a(23) =14736a(24) =16614a(25) =18642a(26) =20832a(27) =23184a(28) =25710a(29) =28410

External references