18077
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 57.at n=32A020396
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 24.at n=3A031612
- Primes p such that number of primes produced according to rules stipulated in Honaker's A048853 is 4.at n=40A050666
- Least prime in A031930 (lesser of 12-twins) whose distance to the next 12-twin is 2*n.at n=40A052355
- Number of cells in column 1 of all deco polyominoes of height n. A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=6A121580
- Prime sums of 6 positive 5th powers.at n=33A123035
- Primes in the sequence A003294 of certain fourth powers bases.at n=11A134820
- Primes congruent to 23 mod 59.at n=38A142750
- Primes congruent to 21 mod 61.at n=34A142819
- Inverse of coefficient array for polynomials P(n,x)=x*P(n-1,x)+floor(n^2/4)*P(n-2,x), P(0,x)=1,P(1,x)=x.at n=57A178117
- Cyclops emirps.at n=27A183057
- Numbers k such that 10^(2*k+1)-8*10^k-1 is prime.at n=7A183184
- k such that 10^(2*k+1)-j*10^k-1 is prime for some j = 1, 2, 4, 5, 7 or 8.at n=35A213881
- Primes p for which p^2 + p - 1 = q*r (q<r) such that q, r, p^2 + q - 1 and p^2 + r - 1 are primes.at n=51A227276
- Primes of the form 2*n^2+38*n+17.at n=35A243890
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 622", based on the 5-celled von Neumann neighborhood.at n=36A269567
- Primes of the form 43*n^2 - 537*n + 2971 in order of increasing nonnegative values of n.at n=26A272285
- Primes p such that 6p - 1 and 6p + 1 are twin primes and ((6p-1)^2 + (6p+1)^2) / 10 is prime.at n=13A283957
- Primes p of the form 8*k + 5 such that every odd prime divisor of p-1 has the form 8*t + 7.at n=36A306932
- Primes p such that p, x+y, x-y, p-x*y and p+x*y are prime, where y = p mod 5 and x = (p-y)/5.at n=23A342771