40368

Appears in sequences

• a(1) = 1, a(2) = 16, a(n) = lcm(48, 2n^2) for n>2.at n=28A032444
• If p and q are twin primes then pq + 1 is always divisible by 3, except for (p,q)=(3,5). Sequence gives values of (pq + 1)/3.at n=19A165280
• Triangle T(n,m), [x*A(x)]^m=sum(n>=m T(n,m)*x^n), where A(x) satisfies x*A(x)^2= -(2*x*A(x)+sqrt(1-4*x*A(x))-1)/(4*x*A(x)+sqrt(1-4*x*A(x))-1).at n=22A188109
• Integer areas of integer-sided triangles such that the distance between the incenter and the circumcenter is an integer.at n=37A231174
• Number of (n+1)X(n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=8A250763
• Number of n X 2 0..1 arrays with no element unequal to a strict majority of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=19A280227
• Starts of runs of 3 consecutive Zeckendorf-Niven numbers (A328208).at n=30A328210
• Number of solutions to x^2 + y^2 + z^2 + w^2 <= n^2, where x, y, z, w are positive odd integers.at n=38A349611