38944

Appears in sequences

• Number of 1X5 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 1 zero-sum 5-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=26A192692
• Number of non-sphere-homeomorphic crossing optimal 2-page book drawings of complete graph K_{2n+1}.at n=12A226917
• Sum over all partitions of n of the number of distinct parts i of multiplicity i - 1.at n=45A277101
• a(n) = number of subsets S of {1,2,...,n} having more than 2 elements such that (sum of least three elements of S) = max(S).at n=21A357287