Number of arrays of n+2 integers in -5..5 with sum zero and the sum of every adjacent pair being odd.
A202073
Number of arrays of n+2 integers in -5..5 with sum zero and the sum of every adjacent pair being odd.
Terms
- a(0) =24a(1) =220a(2) =504a(3) =0a(4) =15010a(5) =142692a(6) =340660a(7) =0a(8) =10924220a(9) =105606040a(10) =255768620a(11) =0a(12) =8472842700a(13) =82602700388a(14) =201570991218a(15) =0a(19) =0
External references
- oeis: A202073