229714

Appears in sequences

• Number of arrays of n+2 integers in -3..3 with sum zero and adjacent elements differing in absolute value.at n=6A202957
• T(n,k)=Number of arrays of n+2 integers in -k..k with sum zero and adjacent elements differing in absolute value.at n=42A202962
• Number of arrays of 9 integers in -n..n with sum zero and adjacent elements differing in absolute value.at n=2A202969
• a(n) = Sum_{k=1..n} (-1)^(k-1) * binomial(floor(n/k)+4,5).at n=28A366723