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

A248463

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

Terms

    a(0) =10a(1) =36a(2) =148a(3) =380a(4) =862a(5) =1652a(6) =2956a(7) =4860a(8) =7642a(9) =11400a(10) =16488a(11) =23044a(12) =31482a(13) =41952a(14) =54956a(15) =70672a(16) =89662a(17) =112128a(18) =138708a(19) =169632a(20) =205610a(21) =246884a(22) =294240a(23) =347960a(24) =408890a(25) =477324a(26) =554196a(27) =639828a(28) =735214a(29) =840700

External references