800001

Appears in sequences

• Smallest k such that each of the five factorials (5k)!, (5k+1)!, (5k+2)!, (5k+3)! and (5k+4)! has exactly 10^n trailing 0's. Zero, if no such k exists.at n=6A181581
• a(n) = 8*10^n + 1.at n=5A199689
• a(1) = 1; for n > 1: a(n) = smallest odd number greater than a(n-1) which does not use any digit used by a(n-1).at n=43A229364
• Number of digits in n equals number of syllables in English name of n.at n=32A276765
• Numbers k such that product of divisors of k ends with k and k is nonprime (A018252).at n=27A278473
• a(1) = 1; a(n) is the smallest natural number such that a(n) > a(n-1), and the name of a(n) in English starts with the letter a(n-1) ends with, and a(n) makes the sequence extendable.at n=11A281067