55555555555
domain: N
Appears in sequences
- a(n) = 5*(10^n - 1)/9.at n=11A002279
- Worthless numbers: numbers without h, o, r, t, or w.at n=22A073419
- Repdigit Kaprekar numbers.at n=17A145875
- A109613(n)-fold concatenation of A008619(n).at n=9A180115
- Repdigit numbers with repdigit digital sum.at n=28A201061
- Sphenic numbers having identical digits.at n=18A268582
- Expansion of x*(1 + 5*x + 40*x^2)/((1 - x^2)*(1 - 10*x^2)).at n=22A322927
- Palindromic Kaprekar numbers.at n=18A382163