516528

Appears in sequences

• Number of -3..3 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 three, four, six or seven distinct values for every i,j,k<=n.at n=9A211739
• Numbers n such that 2n-1 and 2n+1 divide 2^n-1.at n=20A233089
• Number of compositions of n with exactly 9 transitions between different parts.at n=8A244721