Number of length 2+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

A249214

Number of length 2+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.

Terms

    a(0) =250a(1) =4586a(2) =51200a(3) =294568a(4) =1267754a(5) =4353482a(6) =12777540a(7) =32910110a(8) =77097762a(9) =165865332a(10) =335432460a(11) =639208042a(12) =1165096450a(13) =2034488164a(14) =3435664024a(15) =5608125804a(16) =8919812138a(17) =13812228622a(18) =20946412056a(19) =31084523896a(20) =45360185886

External references