33749

Properties

Appears in sequences

• Number of unlabeled distributive lattices on n nodes.at n=21A006982
• 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 14.at n=23A031602
• Denominators of continued fraction convergents to sqrt(674).at n=6A042297
• Primes p such that 5 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248).at n=18A080185
• Primes of the form 6n^2 - 1.at n=30A090686
• Primes A005382(n) + A005384(n) - 1 with a twin prime A005382(n) + A005384(n) + 1.at n=37A099109
• Primes of the form p = prime(k+1) such that prime(k) = (prime(k+3)+prime(k-1))/2.at n=32A126239
• a(n) = 54*n^2 - 1.at n=24A158656
• Primes of the form 10n^3-1.at n=5A201036
• Number of n-length words w over ternary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.at n=12A213291
• Number of (n+2) X 5 0..1 matrices with each 3 X 3 subblock idempotent.at n=17A224554
• Primes of form n^2 + 625.at n=34A256777
• Primes p of the form x^2 + y^2 such that q = (x^2 + 1)/y^2 is a prime less than p.at n=3A282341
• Primes p that remain prime through 3 iterations of function f(x) = 6x - 1.at n=31A289109
• Primes of the form 2^a * 3^b * 5^c - 1 for positive a, b, c.at n=37A293425
• Starts of runs of 4 consecutive numbers that have mutually distinct exponents in their prime factorization (A130091).at n=18A342030
• Prime numbersat n=3613