19363

Appears in sequences

• Fibonacci sequence beginning 1, 19.at n=16A022109
• a(n) is the least number k that A074389(k) = n.at n=16A074390
• Average of four successive primes squared, (prime(n)^2 + prime(n+1)^2 + prime(n+2)^2 + prime(n+3)^2)/4, n>=2.at n=30A075894
• a(n) = n*F(n) - (n-1)*F(n-1), where the F(j)'s are the Fibonacci numbers (F(0)=0, F(1)=1).at n=17A136391
• Number of reduced words of length n in the Weyl group B_17.at n=5A161877
• Number of reduced words of length n in the Weyl group D_17.at n=5A162328
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w<x+y.at n=33A182260
• Number of partitions of n such that the number of parts and the smallest part are not coprime.at n=51A201025
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=4A316872
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=3A316873
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=31A316876
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=32A316876
• Rounded value of z(n)*prime(n), where z(n) = imaginary part of n-th nontrivial zero of the Zeta function and prime(n) = n-th prime.at n=37A342756
• Successive records of function f(x) = log(abs(pi(x) - R(x)))/log(x) where pi(x) is the number of primes <= x and R(x) is Riemann's prime counting function.at n=46A353055
• Indices of prime squares in A381019.at n=17A381095