36363636364
domain: N
Appears in sequences
- a(n)^2 is the least square base-n doublet (base-n representation is the concatenation of 2 identical strings).at n=8A020339
- Numbers whose square is the concatenation of two identical numbers, i.e., of the form NN.at n=0A106497
- Smallest number whose square begins and ends with the same n digits, and with any other digit(s) in between.at n=10A161355
- a(n) is the least positive number k such that k^2 is the concatenation of m and m + n for some positive number m, or -1 if there is no such k.at n=0A369689