Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and exactly two more elements moved upwards than downwards.
A263782
Number of length n arrays of permutations of 0..n-1 with each element moved by -3 to 3 places and exactly two more elements moved upwards than downwards.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =10a(6) =31a(7) =134a(8) =439a(9) =1604a(10) =5088a(11) =17115a(12) =54199a(13) =176073a(14) =552856a(15) =1755516a(16) =5472509a(17) =17149688a(18) =53191180a(19) =165306987a(20) =510614655a(21) =1578127066a(22) =4859554763a(23) =14963066678a(24) =45966984378a(25) =141165413462a(26) =432876102395
External references
- oeis: A263782