197962domain: NAppears in sequencesNumber of -6..6 arrays x(0..n-1) of n elements with zero sum and no two consecutive zero elements.at n=5A199528Number of -n..n arrays x(0..5) of 6 elements with zero sum and no two consecutive zero elements.at n=5A199533O.g.f. exp( Sum_{n >= 1} A211421(n)*x^n/n ).at n=4A262740