Number of length 4+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four.
A249237
Number of length 4+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four.
Terms
- a(0) =136a(1) =3888a(2) =60744a(3) =448148a(4) =2325864a(5) =9772492a(6) =34184700a(7) =102003646a(8) =280506352a(9) =694716964a(10) =1591981864a(11) =3441580468a(12) =7017193772a(13) =13588351272a(14) =25335534664a(15) =45379544842a(16) =78550414352a(17) =132184098358a(18) =216354909052a(19) =345309250322
External references
- oeis: A249237