Number of length 6+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
A249091
Number of length 6+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
Terms
- a(0) =22a(1) =243a(2) =8504a(3) =83045a(4) =412334a(5) =2439587a(6) =9128450a(7) =26718133a(8) =77477206a(9) =186461959a(10) =393375414a(11) =815573943a(12) =1532600102a(13) =2665869517a(14) =4588603836a(15) =7429078523a(16) =11465527204a(17) =17540618531a(18) =25835346484a(19) =36786441199a(20) =52063130104a(21) =71754093333
External references
- oeis: A249091