26651

Appears in sequences

• Semiprimes in A054552.at n=28A113690
• a(n) = (2*n^3 + 5*n^2 + 11*n)/2.at n=28A162263
• G.f. A(x) satisfies: 1/A(x)^2 + 4*x*A(x)^2 = 1/A(x^2) + 2*x*A(x^2).at n=6A187814
• Numbers n such that prime(n) + reversal(prime(n)) is a square.at n=15A227371
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 133", based on the 5-celled von Neumann neighborhood.at n=33A270234
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 579", based on the 5-celled von Neumann neighborhood.at n=30A273028