50000000000
domain: N
Appears in sequences
- Denominator of sum of -11th powers of divisors of n.at n=9A017686
- Expansion of g.f. (1+2*x+5*x^2)/(1-10*x^3).at n=32A051109
- Expansion of (1-5*x)/(1-10*x).at n=11A093143
- a(n)=Product{k=0..n, 1+4^A010060(k)}/2.at n=21A101654
- Numbers with no "e" in Dutch.at n=11A114644
- Numbers with no "e" in Dutch (Miljard without "een").at n=12A115072
- Coefficient of q^n in (1-q)^5/(1-5q); dimensions of the enveloping algebra of the derived free Lie algebra on 5 letters.at n=16A118266
- Complete list of all 9 numbers n such that n is equal to the number of 9's in the decimal digits of all numbers <= n.at n=5A130431
- Numbers n such that the sum of all numbers formed by deleting one digit from n is equal to n.at n=36A131639
- Denominator of Bernoulli(n, -1/10).at n=11A158996
- Period of powers of 3 mod 10^n.at n=11A216099
- Period of powers of 11 mod 10^n.at n=10A216156
- Period of powers of 7 mod 10^n.at n=12A216164
- a(n) = 2^((n-1) mod 2)*5*10^floor((n-1)/2).at n=21A268100