32086

Appears in sequences

• Shifts 6 places right under binomial transform.at n=13A010746
• Shifts 6 places left under inverse binomial transform.at n=19A010747
• Numbers k such that x^k + x^9 + 1 is irreducible over GF(2).at n=49A057479
• Numbers n such that sigma(2*phi(n)) = 2*sigma(n).at n=16A137733
• Total number of line segments between points visible to each other in a square n X n lattice.at n=17A141255
• Number of 7-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-bishop's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=9A187611
• Expansion of psi(x^2) * phi(x^7) / (f(-x) * f(-x^7)) in powers of x where phi(), psi(), f() are Ramanujan theta functions.at n=32A193826
• Construct sequences P,Q,R by the rules: Q = first differences of P, R = second differences of P, P starts with 1,3,9, Q starts with 2,6, R starts with 4; at each stage the smallest number not yet present in P,Q,R is appended to R. Sequence gives P.at n=51A225385
• a(n) = Sum_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|)/8.at n=35A331773
• Bisection of main diagonal of A115009.at n=8A358297