26445

Appears in sequences

• Multiplicative closure of twin prime pair products (A037074).at n=25A074480
• a(n) = n*(n+2)*(n-2)/3.at n=41A077415
• Least area/6 of primitive Pythagorean triangles with even leg 4n.at n=42A096898
• a(n) = (2*n+1)*(2*n+3)*(2*n+5)/3.at n=20A162540
• Primitive (squarefree) elements of A199745.at n=19A200145
• Numbers n such that the sum of the distinct prime divisors of n that are congruent to 1 mod 4 equals the sum of the distinct prime divisors congruent to 3 mod 4.at n=12A215949
• Numbers divisible by prime(d) for each digit d in their base-6 representation, none of which may be zero.at n=39A256876
• Numbers k such that 7*R_k + 10 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=15A256906
• Squarefree products of k primes that are symmetrically distributed around their average. Case k = 4.at n=12A294751
• Sum of terms of A293630 after generating the sequence for n steps (see comments).at n=12A298590
• Perimeters of more than one primitive 120-degree integer triangle.at n=18A350047
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n+2*k-1,n-k) * Fibonacci(k+1).at n=13A390854