101245

Appears in sequences

• Number of -1..1 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having one, two, three, four, five or six distinct values for every i,j,k<=n.at n=10A211531
• Braille natural numbers (including zero), using "0" as digit concatenation mark.at n=17A220090
• G.f. satisfies A(x) = 1 + x*A(x) + 2*x^3*A(x)^3.at n=13A367111