33809

Properties

Appears in sequences

• Expansion of 1/((1-4*x)*(1-7*x)*(1-9*x)).at n=4A019613
• Primes of the form n^3 + n^2 + 17, for nonnegative values of n.at n=24A050266
• Number of points in Z^8 of norm <= n.at n=3A055414
• Number of points in Z^n of norm <= 3.at n=8A055427
• Smaller of twin primes whose middle term is a multiple of A002110(4)=210.at n=29A060230
• Sophie Germain primes for which the reversal is also a Sophie Germain prime.at n=34A118573
• Largest of 3 consecutive prime numbers such that p1*p2*p3 + d1 + d2 + 1 = average of twin prime pairs, d1 (delta) = p2 - p1, d2 (delta) = p3 - p2.at n=3A153408
• a(n) = b_f(n) where f is the 2-periodic sequence f(k) = (-1)^k (see comments).at n=15A186265
• Primes of the form 8n^2 + 9.at n=24A201705
• Partial sums of A294016.at n=52A294017
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals: A(n,k) = [x^(n^2)] theta_3(x)^k/(1 - x), where theta_3() is the Jacobi theta function.at n=69A302997
• Primes which yield again a prime when the digits are taken according to the lexicographically first superpermutation of corresponding order and of minimal length.at n=35A332088
• Lesser of twin primes p, p+2 such that prime(p) and prime(p+2) are also twin primes.at n=23A332968
• Number of integer solutions to (x_1)^2 + (x_2)^2 + ... + (x_8)^2 <= n.at n=9A341397
• Prime numbers whose binary expansion involves powers of 2 with only composite (or zero) exponents.at n=31A342481
• Primes p such that p^2+q+r, p+q^2+r and p+q+r^2 are all prime, where q and r are the next two primes after p.at n=7A348353
• Primes p such that 14*p + 1 divides 2^p - 1.at n=27A350702
• Primes having only {0, 3, 8, 9} as digits.at n=38A386069
• Prime numbersat n=3621