454545
domain: N
Appears in sequences
- a(n) = floor(10^7/n).at n=21A033425
- Expansion of (3+x)/(1-x)^6.at n=24A059599
- Numbers k such that (k + R(k)) / (k - R(k)) = +-11 where R(k) is the digit reversal of k (A004086).at n=13A062390
- 6*n/5 = (n written backwards), n > 0.at n=7A193434
- Numbers m such that the largest digit in the decimal expansion of 1/m is 2.at n=34A341383
- Numbers that are the concatenation of two palindromes and that have exactly two palindromic factors, all with the same number of decimal digits.at n=39A355148
- Numbers k such that R(k)/k is of the form (m + 1)/m, where R(k) is the digital reversal of k.at n=18A376259