39191

Properties

Appears in sequences

• Numbers less than the maximum possible determinant A085000(4)=40800 not occurring as determinant of a 4 X 4 matrix with elements 1..16.at n=19A088237
• Numbers k such that A014138(k+1) (the partial sum of the first k Catalan numbers, starting 1, 2, 5, ...) is a prime.at n=11A126807
• Primes occurring in A084704 exactly 4 times.at n=20A128655
• Primes of the form n^2 - 13.at n=18A154648
• Primes of the form 2n^2-9.at n=39A155702
• a(n) = number of primes p, p <= 2^n, where 2^n + p is composite.at n=19A175148
• Primes of the form 8n^2 - 9.at n=20A201859
• Smallest of four consecutive primes whose sum is a square.at n=12A206280
• Primes of the form 2*n^2 + 50*n + 23.at n=25A217496
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 179", based on the 5-celled von Neumann neighborhood.at n=38A270624
• a(n) is the least number that can be written in exactly n ways as p*q + q*r + p*r where (p,q,r) is an unordered triple of distinct primes.at n=35A356457
• First of four consecutive primes p,q,r,s such that q*s - p*r is a square.at n=12A358922
• Positions of records in A369054.at n=14A369063
• Prime numbersat n=4126