Number of arrays of n+2 integers in -4..4 with sum zero and the sum of every adjacent pair being odd.
A202072
Number of arrays of n+2 integers in -4..4 with sum zero and the sum of every adjacent pair being odd.
Terms
- a(0) =14a(1) =120a(2) =264a(3) =0a(4) =3752a(5) =34632a(6) =80812a(7) =0a(8) =1201220a(9) =11395632a(10) =27164010a(11) =0a(12) =412081530a(13) =3962205256a(14) =9551670652a(15) =0a(16) =146582674200a(19) =0a(23) =0
External references
- oeis: A202072