152734domain: NAppears in sequencesNumber of nondecreasing arrangements of n numbers in -5..5 with sum zero and sum of squares less than n*30/3.at n=17A183931Smallest k such that in the pairs of numbers j*k +- 1, none is prime for 1 <= j < n but at least one is prime for j = n; or 0 if no such k exists.at n=24A348347