18293

Appears in sequences

• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 20.at n=29A050969
• Coefficients of the D-Dyson mod 27 identity.at n=41A104504
• Semiprimes in A054552.at n=23A113690
• Start with 1 and repeatedly reverse the digits and add 64 to get the next term.at n=40A118159
• Number of Proth primes < 2^n.at n=33A214120
• Partial sums of A299291.at n=24A299292
• Average number of binary strings of length n with Levenshtein distance <= 3 from a uniform randomly sampled binary string of this length, rounded to nearest integer.at n=30A332918