55455
domain: N
Appears in sequences
- a(n) = Sum_{k=0..5} binomial(n,k).at n=24A006261
- Numbers having four 5's in base 10.at n=14A043512
- Expansion of g.f. (1+z)^(24)/(1-z).at n=5A171445
- Numbers of vectors with 2*n integers such that each element is either 1 or -1, and their sum > n.at n=11A226197
- Palindromes in base 10 that are also palindromes in base 60.at n=16A262069
- The number of base-2 Euler-Jacobi pseudoprimes (A047713) less than 2^n.at n=39A329237
- a(n) = 5*(10^(2*n+1)-1)/9 - 10^n.at n=2A332154
- a(n) = Sum_{k=0..n} binomial(4*n+4,k).at n=5A387011