50233

Appears in sequences

• Brilliant star numbers: semiprimes of the form 6n^2 - 6n + 1 such that both prime factors have the same number of decimal digits.at n=11A083749
• A Chebyshev-related transform of the Fibonacci numbers.at n=16A112576
• Crystal ball sequence for the A2 x A2 lattice.at n=13A143008
• Number of (w,x,y,z) with all terms in {1,...,n} and w*x<3*y*z.at n=16A211917
• Centered 12-gonal numbers which are semiprimes, intersection of A003154 and A001358.at n=43A218172
• Triangle read by rows: T(n,k) is the number of endofunctions on [n] whose second-smallest component has size exactly k; n >= 0, 0 <= k <= max(0,n-1).at n=23A350079