102347

Appears in sequences

• Number of anagrams of a(n) that are prime increases.at n=22A046888
• Values of n where number of permutations of digits a(n) that are prime increases.at n=25A046891
• Primeval numbers: numbers that set a record for the number of distinct primes that can be obtained by permuting some subset of their digits.at n=26A072857
• a(n) = (2*n^2)^(-1)*Sum_{d|n} (-1)^(n+d)*moebius(n/d)*binomial(2*d,d).at n=13A131868
• Numbers with exactly six distinct base-10 digits.at n=2A220076
• Semiprimes which have one or more occurrences of exactly six different digits.at n=0A235694
• A variant of primeval numbers A072857 where primes are counted with repetition as in A075053, not as in A039993.at n=28A239196
• Number of nonnegative integers with property that their base 7/4 expansion (see A024641) has n digits.at n=18A245426
• a(1) = 1; for n > 1, a(n) is the smallest positive integer that has not yet appeared which contains all the distinct digits of the sum of all previous terms a(1)..a(n-1).at n=39A368347