46349

Properties

Appears in sequences

• a(n) = floor(binomial(2*n,n)/3^n).at n=46A024503
• Expansion of (1-x)/(1-2*x-3*x^2-2*x^3).at n=10A077841
• a(n) is the smallest lesser of twin prime p, such that prime(2 + p) - prime(p) = 2n (cf. A096474).at n=37A096475
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=45A098717
• Difference between n-th Fibonacci number and floored n-th power of Viswanath's constant.at n=23A140443
• Number of tilings of a 4 X n rectangle using straight (3 X 1) trominoes and 2 X 2 tiles.at n=17A202536
• Primes p for which p + 2, p^3 + 2 and p^5 + 2 are prime.at n=4A242326
• a(n) is the least integer k such that there are n values of i <= k for which gpf(i^2 + 1) = gpf(k^2 + 1), where gpf(x) is the greatest prime factor of x.at n=38A258840
• The first of three consecutive primes the sum of which is equal to the sum of three consecutive triangular numbers.at n=25A298169
• Prime numbersat n=4793