111111

Appears in sequences

• Unary representation of natural numbers.at n=5A000042
• 6 in base 10-n.at n=9A001734
• Repunits: (10^n - 1)/9. Often denoted by R_n.at n=6A002275
• Numbers whose square is a palindrome.at n=34A002778
• Least positive multiple of n written in base 3 using only 0 and 1.at n=25A004283
• Least positive multiple of n written in base 4 using only 0 and 1.at n=34A004284
• Least positive multiple of n written in base 4 using only 0 and 1.at n=14A004284
• Least positive multiple of n written in base 7 using only 0 and 1.at n=11A004287
• Least positive multiple of n written in base 7 using only 0 and 1.at n=5A004287
• Least positive multiple of n written in base 7 using only 0 and 1.at n=23A004287
• Least positive multiple of n written in base 9 using only 0 and 1.at n=13A004289
• Least positive multiple of n written in base 9 using only 0 and 1.at n=34A004289
• Least positive multiple of n written in base 9 using only 0 and 1.at n=25A004289
• Least positive multiple of n that when written in base 10 uses only 0's and 1's.at n=32A004290
• Numbers with mirror symmetry about middle.at n=39A006072
• Positive integers k such that k-th triangular number is palindromic.at n=27A008509
• Numbers k such that both k and the k-th triangular number are palindromes.at n=8A008510
• Repdigit numbers, or numbers whose digits are all equal.at n=46A010785
• Numbers > 9 with all digits the same.at n=36A014181
• G.f.: 1/((1-x)(1-4x)(1-10x)(1-12x)).at n=4A021994