Number of length n+2 0..1 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.
A251421
Number of length n+2 0..1 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =2a(1) =12a(2) =12a(3) =40a(4) =56a(5) =144a(6) =240a(7) =544a(8) =992a(9) =2112a(10) =4032a(11) =8320a(12) =16256a(13) =33024a(14) =65280a(15) =131584a(16) =261632a(17) =525312a(18) =1047552a(19) =2099200a(20) =4192256a(21) =8392704a(22) =16773120a(23) =33562624a(24) =67100672a(25) =134234112a(26) =268419072a(27) =536903680a(28) =1073709056a(29) =2147549184
External references
- oeis: A251421