22513

Appears in sequences

• Number of permutations satisfying -k <= p(i) - i <= r and p(i) - i not in I, i=1..n, with k=1, r=4, I={0,3}.at n=31A079973
• Expansion of (1-6*x+12*x^2-8*x^3+x^4)/((1-2*x)^2*(1-3*x+x^2)).at n=11A244885
• Expansion of e.g.f. 1/(1 - x^3)^(1 + 1/x + 1/x^2).at n=7A246689
• Coefficients of mock modular form H_2^(4) (divided by 16).at n=20A256209
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 339", based on the 5-celled von Neumann neighborhood.at n=31A271291
• Centered cubohemioctahedral numbers: a(n) = 2*n^3+9*n^2+n+1.at n=21A274973
• Numbers k such that (4*10^k + 173)/3 is prime.at n=23A280848
• Odd numbers k such that phi(k) and cototient(k) have the same prime signature.at n=32A280927
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 595", based on the 5-celled von Neumann neighborhood.at n=15A283212
• Numbers k such that phi(k) > phi(k+1) > phi(k+2) > phi(k+3) where phi is the Euler totient function (A000010).at n=38A326817
• Number of compositions (ordered partitions) of n into prime parts not greater than sqrt(n).at n=31A368872
• Consecutive states of the linear congruential pseudo-random number generator for 16-bit WATFOR/WATFIV when started at 1.at n=12A384158
• Expansion of g/(1 - x*g)^2, where g = 1+x*g^3 is the g.f. of A001764.at n=7A391168