123523domain: NAppears in sequencesTriangle read by rows: T(n,k) number of ways of partitioning the (n+3)-element multiset {1,1,1,1,2,3,...,n} into exactly k nonempty parts, n >= 0 and 1 <= k <= n + 3.at n=68A291118Numbers k such that 1 + Sum_{i=1..k} floor(k/i)*(2^i) is a prime number.at n=27A344783