33333333333
domain: N
Appears in sequences
- a(n) = 3*(10^n - 1)/9.at n=11A002277
- Divisors of 10^11 - 1.at n=10A027896
- Numbers m that divide the concatenation of m-1 and m+1.at n=22A069871
- Integer part of the square root of n-th decimal repunit.at n=21A096483
- Inventory application: Numerator of the probability (rounded to the nearest trillionth: (10^-12)-th) of at least one shortage per month when n customers each request one item on one independently-chosen random day of a 30-day month, but when only exactly one such item is available per day.at n=2A099600
- Repdigit numbers with repdigit digital sum.at n=26A201061
- Numbers k that divide the concatenation of k+1 and k-1.at n=32A249647
- Sphenic numbers having identical digits.at n=17A268582
- 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=32A289006
- Positive integers k such that A270710(k) (= (k+1)*(3*k-1)) have only 1 or 2 different digits in base 10.at n=38A322570
- Repdigit numbers whose square does not contain the repeated digit.at n=22A385515