34551

Appears in sequences

• Numbers k such that sigma(k)*k is a triangular number.at n=30A115909
• Number of 1X9 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 9-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=9A192696
• Numbers k such that (2*10^k + 529)/9 is prime.at n=26A281734