77181

Appears in sequences

• a(n) = Sum_{i=0..n} digsum_6(i)^4, where digsum_6(i) = A053827(i).at n=57A231675
• Expansion of (1 + x + 21*x^2 + x^3 + x^4)/(1 - x)^5.at n=16A257602
• Zero-avoiding Fibonacci sequence: a(n) is the largest zeroless number that can be written as a(i) + a(j) where 1 <= i < j < n with a(1) = a(2) = 1.at n=25A374924