Number of length n+2 0..3 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
A250315
Number of length n+2 0..3 arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =8a(1) =60a(2) =104a(3) =652a(4) =2432a(5) =12820a(6) =61092a(7) =300616a(8) =1423966a(9) =6523576a(10) =28749998a(11) =122577404a(12) =509838050a(13) =2086581780a(14) =8455716678a(15) =34069235524
External references
- oeis: A250315