42814
domain: N
Appears in sequences
- Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)<2.at n=17A212896
- Numbers x such that sigma(x) = rev(sigma*(x)), where sigma(x) is the sum of the divisors of x, sigma*(x) the sum of the anti-divisors of x and rev(x) the reverse of x.at n=3A248787
- Distinct values of A343511.at n=9A341337
- a(n) = 1 + Sum_{d|n, d < n} a(d)^2.at n=35A343511