180880

Appears in sequences

• Binomial transform of odd primes.at n=13A178167
• Triangle read by rows: T(n, k) = (-1)^(n - k) * binomial(2n + 1, n - k) * L(2k + 1), 0 <= k <= n, where L(k) is the k-th Lucas number (A000032).at n=40A326832
• a(n) is the least number that has exactly n divisors with sum of digits n.at n=10A359444