3333333333

Appears in sequences

• a(n) = 3*(10^n - 1)/9.at n=10A002277
• Palindromic quotients (k*(k+1)*(k+2)) / (k+(k+1)+(k+2)).at n=19A032790
• a(n) = floor(10^10/n).at n=2A057072
• Number of functions from {1,2,...,n} to {1,2,...,n} such that the sum of the function values is 0 mod 3.at n=9A068595
• Numbers m that divide the concatenation of m-1 and m+1.at n=20A069871
• Numbers with a digit sum of n and a maximum product of digits. In case of two identical products choose the largest number.at n=29A083178
• Least number with identical digits such that the concatenation a(n) a(n-1) ...a(2)a(1) a(2) ... a(n-1) a(n) is a prime.at n=17A090276
• Integer part of the square root of n-th decimal repunit.at n=19A096483
• Copies of 1 and 3 alternately such that every partial concatenation is a prime.at n=5A110774
• a(n)*n = A112895(n).at n=9A112896
• a(n) = A133195(n)/3.at n=30A133201
• Minimum number k for which the digital sum of k*n is 3*n.at n=30A147823
• Minimum number k for which the digital sum of k*n is 6*n.at n=15A147826
• Numbers k that divide the concatenation of k+1 and k-1.at n=29A249647
• Repdigit numbers n such that the repeated digit of n is equal to the digital root of n.at n=24A271569
• Conversion to octal of the binary expansion given by the first n terms of the period-3 sequence A011655 (repeat 0, 1, 1).at n=29A289006
• Positive integers k such that A270710(k) (= (k+1)*(3*k-1)) have only 1 or 2 different digits in base 10.at n=36A322570
• Numbers with all digits equal and from the set {1, 3, 7, 9}.at n=37A338712
• Numbers whose reciprocals have period 10.at n=31A345319
• Numbers k such that the decimal expansion of the sum of the reciprocals of the digits of k starts with the digits of k in the same order.at n=13A354466