45481

Properties

Appears in sequences

• Primes which can be partitioned into distinct factorials. 0! and 1! are not considered distinct.at n=16A089359
• Row sums of the central coefficients triangle (A163771).at n=8A163774
• Irregular symmetric triangle of coefficients T(n,k) of the polynomials p(n,x) = Sum_{k=0..n} binomial(n+1,k)*(1+x)^(2*k)*(-x)^(n-k) for 0 <= k <= 2*n.at n=72A264766
• Expansion of Product_{k>=1} (1 + x^k)^(sigma_0(k)^2).at n=17A301746
• Indices of tetrahedral numbers that are Fermat pseudoprimes to base 2.at n=5A321866
• a(n) is the smallest positive integer that when expressed in bases 2 to n, but read in base n, is always prime.at n=4A348226
• Lexicographically earliest infinite sequence of distinct primes such that, for n > 0, 2n | (a(n+1) - a(n)) and, for n > 0, b(n+1) > b(n) where b(n) = (a(n+1) - a(n)) / 2n.at n=29A350392
• Prime numbersat n=4715