76249

Properties

Appears in sequences

• Least prime in A023200 (lesser of 4-twins) such that the distance to the next 4-twin is 6*n.at n=42A052351
• Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 4.at n=9A166199
• Number of 9X9X9 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=4A166217
• a(n) = Sum_{p in P} binomial(H(2,p),2), where P is the set of partitions of n, and H(2,p) = number of hooks of size 2 in p.at n=34A301313
• Numbers X such that X^2 + Y^2 = 10^(2*k) + 1, with X > Y > 0 and k is the decimal digit length of X-1.at n=7A368418
• Primes that are the sum of all primes in an interval [k,2*k] for some k>=1.at n=39A389113
• Prime numbersat n=7504