83886078

Appears in sequences

• a(n) = 5*2^n - 2.at n=24A051633
• Number of palindromes (in base 4) below 4^n.at n=24A117863
• a(n) = 5*2^(n-2) - 2 for n > 1, with a(1) = 1.at n=25A131051
• Row sums of triangle A134061.at n=24A134062