23466

Appears in sequences

• Number of binary strings u of any length with property that length(u) + number of 0's in u <= n (only one of a string and its reversal are counted).at n=20A066067
• a(n) = a(n-1) + a(n-2) + n + 2 with n>1, a(0)=a(1)=0.at n=18A210730
• Expansion of Product_{n>=1} ((1 + 2*x^n)/(1 - 2*x^n))^(1/2).at n=15A303346
• Number of nonequivalent symmetric sets whose translations cover {1..n}.at n=29A329235