40112

Appears in sequences

• Numerators of continued fraction convergents to sqrt(381).at n=7A041722
• Numbers n such that n - reverse(n) = phi(n).at n=4A072393
• G.f. satisfies: A(x) = 1/AGM(1, 1 - 8*x/A(x) ).at n=18A158100
• G.f. satisfies: A(x^2) = -4*x + 1/AGM(1, 1 - 8*x/(A(x^2) + 4*x) ).at n=9A158101
• Numbers n such that either prime(n-1) == -1 (mod n) or prime(n+1) == -1 (mod n) but not both.at n=32A225318
• G.f. A(x) satisfies: A(x) = x + A( x*A(x) + x*A(x)^3 ).at n=12A271843
• Positive integers j such that prime(i) + prime(j) = i*j for some i <= j.at n=18A272862
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 225", based on the 5-celled von Neumann neighborhood.at n=15A279991
• Numbers k such that (304*10^k - 43)/9 is prime.at n=21A289943
• a(n) = coefficient of x^n in A(x) where A(x)^2 = A( x^2/(1 - 4*x - 8*x^2) ).at n=7A357548