5726524817

Appears in sequences

• Triangle read by rows: for 1 <= k < n, a(n, k) is the least number not already used. For n > 1, a(n, n) is the least number not already used such that the product of the n-th row is a multiple of the product of the previous row.at n=54A094275
• Leading diagonal of triangle A094275.at n=9A094276
• a(n) is the denominator of the sum of reciprocals of primes not exceeding n and not dividing binomial(2*n, n).at n=40A334075