120060

Appears in sequences

• Numbers k such that prime(k) +/- k and prime(k) +/- 2k are all primes.at n=16A112530
• Subset of A020342 (vampire numbers, definition 1) listing numbers which have more than one such representation of the desired form.at n=29A144563
• First column of triangle in A176452.at n=20A176485
• G.f. A(x) satisfies A(x) = 1 + x*A(x)^2*(A(x) + A(-x))/2.at n=10A217138
• G.f. A(x) satisfies A(x)^2 = 1 + 4*x*A(x)^6.at n=5A245113
• Number of (4+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=9A250786