33096

Appears in sequences

• Numbers k such that sopfr(k) = sopfr(k - sopfr(k)).at n=31A050781
• Difference between partial sums of partition numbers (A026905) and partial sums of numbers of partitions into distinct parts (A026906).at n=30A056870
• Triangle of coefficients, read by rows, where T(n,k) is the coefficient of x^n*y^k in f(x,y) that satisfies f(x,y) = (3-sqrt(1-4x))/2 + xy*f(x,y)^3.at n=48A086636
• Expansion of g.f.: x/((1-x^2)^4 -1+x).at n=8A123889
• a(n) = 169*n^2 - 2*n.at n=13A158218
• a(n) = Sum_{d|n} phi(n/d)*2^(d+1), with a(0) = 0.at n=14A160619
• Number of -n..n arrays x(0..3) of 4 elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).at n=26A199911
• Number of (w,x,y) with all terms in {0,...,n} and 2*|w-x| > max(w,x,y) - min(w,x,y).at n=36A213045
• Number of (n+2)X(1+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010011.at n=10A260760
• a(n) = Sum_{d|n} (2^d - (-1)^d)*phi(3*n/d).at n=13A306899