111111112

Appears in sequences

• a(n) = A047848(7,n).at n=9A047855
• a(1) = 1, then the smallest number not included earlier and not a string of 1's such that the concatenation a(n), a(n+1) is a palindrome.at n=31A083122
• Smallest n-digit member of A089699.at n=8A089700
• A Jacobsthal sequence (A078008) to base 4.at n=18A092900
• a(n) is the least positive integer in base 10 containing n ones that is divisible by n.at n=7A112891
• Table T(n,k) = ceiling(10^n/(10^k-1)), n >= 0, k >= 1, read by antidiagonals.at n=45A176088
• Lunar squares n that can be written as n = i*i in more than one way.at n=1A180513
• Composite numbers whose product of digits is 2.at n=29A201015
• A base-3/2 sorted Fibonacci sequence that starts with a(0) = 0 and a(1) = 1. The terms are interpreted as numbers written in base 3/2. To get a(n+2), add a(n) and a(n+1), write the result in base 3/2 and sort the "digits" into increasing order, omitting all zeros.at n=19A305753
• A base-3/2 sorted Fibonacci sequence that starts with a(0) = 0 and a(1) = 1. The terms are interpreted as numbers written in base 3/2. To get a(n+2), add a(n) and a(n+1), write the result in base 3/2 and sort the "digits" into increasing order, omitting all zeros.at n=20A305753