222222

Appears in sequences

• a(n) = 2*(10^n - 1)/9.at n=6A002276
• Repdigit numbers, or numbers whose digits are all equal.at n=47A010785
• Numbers > 9 with all digits the same.at n=37A014181
• Palindromes which are the product of 6 distinct primes.at n=0A046396
• Smallest squarefree palindrome with exactly n distinct prime factors.at n=6A046399
• Append d digits d after each digit d in decimal expansion of n.at n=22A048377
• Digital representation of m contains only either 1's or 2's (but not both 1's and 2's) and 0's, is palindromic and contains no singleton 2's, 1's or 0's.at n=11A061852
• Numbers that are divisible by all of their 1 and 2 digit substrings.at n=41A063527
• Largest number whose digit product equals n; a(n)=0 if no such number exists, e.g., when n has a prime factor larger than 7; no digit=1 is permitted to avoid an infinite number of solutions.at n=63A068190
• Geometric mean of digits = 2 and digits are in nondecreasing order.at n=21A069512
• Repdigits (A010785) ordered by sum of digits (A007953).at n=31A070840
• Repdigits (A010785), excluding repunits (A002275), ordered by product of digits (A007954).at n=20A070841
• Triplets: base 10 representation is the juxtaposition of three identical strings.at n=21A074842
• Squarefree numbers obtained by repeating a single digit.at n=29A077571
• Smallest multiple of n using only digits 0 and 2.at n=32A078241
• a(1) = 1, then squarefree palindromes such that a(n+1) = p*a(n) where p is a prime not dividing any previous term.at n=6A082617
• Duplicate of A046399.at n=6A082619
• Smallest multiple of n using a single digit with multiplicity, or 0 if no such number exists.at n=25A083116
• Smallest multiple of n using a single digit with multiplicity, or 0 if no such number exists.at n=13A083116
• Palindromes p such that 5p + 1 is also a palindrome.at n=12A083833