19367

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 17 ones.at n=20A031785
• a(n) = 10*n^2 + 7.at n=44A061722
• a(n) = ((1 + 3*sqrt(2))*(3 + sqrt(2))^n + (1 - 3*sqrt(2))*(3 - sqrt(2))^n)/2.at n=6A163614
• Number of n X n symmetric 0..4 arrays with each element equal to at least two horizontal or vertical neighbors and with new values 0..4 introduced in lower triangular row major order.at n=6A192998
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 237", based on the 5-celled von Neumann neighborhood.at n=29A270982
• Numbers k such that (44*10^k - 413)/9 is prime.at n=18A294374
• Numerators of the partial sums of the Möbius transform of the harmonic numbers.at n=9A334314
• Successive records of function f(x) = log(abs(pi(x) - R(x)))/log(x) where pi(x) is the number of primes <= x and R(x) is Riemann's prime counting function.at n=50A353055