67108857

Appears in sequences

• a(n) = T(7,n), array T given by A048483.at n=23A048490
• a(0)=0; for n>0, a(n) = A102371(4n)/4.at n=7A104403
• a(n) = round((2^n - n - 1)/4).at n=27A173010
• a(n) = Numerator of (0 followed by 1's) - n/2^n.at n=28A273153