18793

Properties

Appears in sequences

• Number of compositions (ordered partitions) of n into distinct odd parts.at n=53A032021
• a(n+1) = a(n) converted to base 10 from base 11.at n=53A055982
• Primes p such that x^18 = 2 has no solution mod p, but x^6 = 2 has a solution mod p.at n=36A059664
• Primes from merging of 5 successive digits in decimal expansion of e.at n=21A104846
• Primes p such that p + googol is prime.at n=13A108250
• Numbers n such that the sum of the digits of the n-th Fibonacci number written in bases 2, 3, 5 and 7 is prime.at n=29A111064
• Primes congruent to 31 mod 59.at n=34A142758
• Primes congruent to 5 mod 61.at n=36A142803
• Primes p such that p+p^2+p^3-+2 are also prime.at n=32A154821
• a(n) = 58*n^2 + 1.at n=18A158666
• Number of (w,x,y,z) with all terms in {0,...,n} and w=[R/2], where R=max{w,x,y,z}-min{w,x,y,z} and [ ]=floor.at n=27A212758
• Primes of the form 232*m^2+1.at n=6A230392
• Primes equal to a heptagonal number plus 1.at n=22A285791
• Triples (a,b,c) such that (a+b+c)^3 = concat(a,b,c), a, b, c > 0, ordered by size of this value.at n=34A328199
• Expansion of 1/((1 - x)^4 - 2*x^4).at n=12A375164
• Numbers k for which there exists m such that the sum from 1 to m and the sum from m + 1 to k are both perfect squares.at n=29A388659
• Prime numbersat n=2144