81103

Appears in sequences

• a(n) = T(2n,n-2), where T is the array in A026120.at n=7A026131
• Divisors of 99999999.at n=31A027890
• a(n) is the index of the smallest triangular number containing exactly n 8's.at n=5A048363
• a(n) = (2*n-1)*(5*n^2-5*n+6)/6.at n=36A063489
• Divisors of 11111111.at n=11A197308
• a(1) = a(3) = 0, and otherwise a(n) is the least multiple of prime(n) whose decimal representation ends with that of prime(n+1).at n=25A333845
• Numbers m such that the largest digit in the decimal expansion of 1/m is 3.at n=40A350814
• a(n) = Sum_{k=1..n-1} tau(k) * sigma_2(n-k).at n=40A374973
• Positions of records in A174414.at n=13A376219
• Integers k such that k + 1 has a divisor that is an anagram of k, which must have the same number of digits as k.at n=36A384597