25991

Appears in sequences

• Centered cube numbers: n^3 + (n+1)^3.at n=23A005898
• Number of partitions satisfying 0 < cn(0,5) + cn(1,5) + cn(4,5) + cn(2,5) and 0 < cn(0,5) + cn(1,5) + cn(4,5) + cn(3,5).at n=38A039904
• Numbers n such that n through n+5 have the same number of distinct prime factors.at n=31A045934
• Number of Fermat pseudoprimes to bases 2, 3 and 5 less than 10^n.at n=12A114248
• (Product of twin primes - 1)/2.at n=15A120876
• a(n) = 18*n^2 - 1.at n=37A157910
• a(n) = 72*n^2 - 1.at n=18A158738
• Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 2..n-2.at n=19A180826
• Number of partitions of 5n such that cn(1,5) = cn(4,5) = cn(2,5) = cn(3,5) <= cn(0,5).at n=14A202085
• a(n) is the number of edges formed by n-secting the angles of a heptagon.at n=35A335759
• Number of compositions of n with weakly increasing first quotients.at n=47A342492
• Sum of the legs of the unique primitive Pythagorean triple whose inradius is the n-th prime and whose short leg is an odd number.at n=29A382097
• E.g.f. A(x) satisfies A(x) = exp( arctanh(x * A(x)) / A(x) ).at n=7A385502