48521

Appears in sequences

• a(n) = Sum_{i=0..n} digsum_5(i)^4, where digsum_5(i) = A053824(i).at n=50A231671
• Numbers x such that sigma(x) + sigma(R(x)) = sigma(x + R(x)), where R(x) is the digit reversal of x and sigma(x) is the sum of the divisors of x.at n=31A246487
• Index of n-th low point in A008348 (see Comments for definition).at n=11A309226
• Result of inserting the integers n = 0, 1, 2, ... in this order into an initially empty list, where n is inserted between the pair of consecutive elements with sum equal to n and minimal absolute difference, or at the end of the list if no such pair exists.at n=31A360447
• E.g.f. satisfies A(x) = exp(x * A(x)^2 * (1 + x * A(x)^2)).at n=5A363358