Number of zero-sum -7..7 arrays of n elements with first through third differences also in -7..7.
A202510
Number of zero-sum -7..7 arrays of n elements with first through third differences also in -7..7.
Terms
- a(0) =1a(1) =7a(2) =57a(3) =297a(4) =1785a(5) =11015a(6) =68781a(7) =436919a(8) =2782455a(9) =17852623a(10) =114949893a(11) =742430377a(12) =4811939259a(13) =31282061157a(14) =203951966061
External references
- oeis: A202510