Number of -7..7 arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero.
A200429
Number of -7..7 arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero.
Terms
- a(0) =1540a(1) =19530a(2) =221984a(3) =2567334a(4) =32233938a(5) =410475622a(6) =5230842688a(7) =66651385442a(8) =852399648492
External references
- oeis: A200429