59580

Appears in sequences

• a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0 = s(n), |s(i) - s(i-1)| = 1 for i = 1,2,3; |s(i) - s(i-1)| <= 1 for i >= 4. Also a(n) = T(n,n), where T is the array defined in A026082.at n=9A026083
• Numbers k such that if you subtract k-reversed from k you get a natural number with the same digits as k.at n=17A121969
• Number of squarefree words of length n in a 5-ary alphabet.at n=7A214939
• Least integer b>2n+1 such that the numbers written as [1,3,...,2n-1,2n+1] and [2n+1,2n-1,...,3,1] in base b are both prime.at n=38A218465
• Dirichlet g.f.: (zeta(s-3) / zeta(s))^2.at n=30A338165