Number of length 7+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.
A249092
Number of length 7+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) =11964a(3) =143925a(4) =805518a(5) =5629189a(6) =23480326a(7) =75209315a(8) =238362040a(9) =614349855a(10) =1375887454a(11) =3011935973a(12) =5922207890a(13) =10720937567a(14) =19147697430a(15) =32000182293a(16) =50821260970a(17) =79809454005a(18) =120332402226a(19) =175018554513
External references
- oeis: A249092