688113

Appears in sequences

• a(1) = 16; a(n+1) = sum of a(n) and (a(n) written in base 2 and reversed).at n=21A070869
• a(n) = 21*2^n - 15.at n=15A305158
• a(n) = Sum_{k=0..n} 9^(n-k) * binomial(n+k-1,k) * binomial(k/3,n-k).at n=8A378555