133914domain: NAppears in sequencesNumber of -n..n arrays x(0..4) of 5 elements with zero sum and no two neighbors summing to zero.at n=10A199834Half the number of 0..n arrays of length 4 with second differences nonzero.at n=21A212783Diagonal of rational function 1/(1 - (x^3 + y^3 + x^4*y)).at n=24A361488