Number of length n+5 0..2 arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four.
A249227
Number of length n+5 0..2 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) =486a(1) =972a(2) =1944a(3) =3888a(4) =7776a(5) =15552a(6) =31104a(7) =62208a(8) =124416a(9) =248832a(10) =497664a(11) =995328a(12) =1990656a(13) =3981312a(14) =7962624a(15) =15925248a(16) =31850496a(17) =63700992a(18) =127401984a(19) =254803968a(20) =509607936a(21) =1019215872a(22) =2038431744a(23) =4076863488a(24) =8153726976a(25) =16307453952
External references
- oeis: A249227