Number of (n+4) X 1 arrays of occupancy after each element moves up to +-4 places including 0.
A222341
Number of (n+4) X 1 arrays of occupancy after each element moves up to +-4 places including 0.
Terms
- a(0) =126a(1) =460a(2) =1690a(3) =6225a(4) =22950a(5) =84626a(6) =312019a(7) =1150208a(8) =4239225a(9) =15621426a(10) =57556155a(11) =212037241a(12) =781074572a(13) =2877011660a(14) =10596599460a(15) =39027676220a(16) =143735627861a(17) =529352597361
External references
- oeis: A222341