Number of length 3+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.
A249215
Number of length 3+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) =496a(1) =11874a(2) =183516a(3) =1287632a(4) =6631348a(5) =26526142a(6) =89437990a(7) =259680594a(8) =678836386a(9) =1608960332a(10) =3563385010a(11) =7370543098a(12) =14518880248a(13) =27241408064a(14) =49261449504a(15) =85646747520a(16) =144718409622a(17) =237078221134
External references
- oeis: A249215