22606

Appears in sequences

• a(n) = least 2k such that p is the least prime in a Goldbach partition of 2k, where p = prime(n).at n=32A025017
• Matrix square of triangle A136220, read by rows.at n=31A136225
• Coefficient of x in the reduction by (x^2 -> x + 1) of the polynomial p(n,x) given in Comments.at n=11A192879
• Number of (w,x,y,z) with all terms in {1,...,n} and w+y=|x-y|+|y-z|.at n=35A212677
• a(n) = a(n-1) + a(n-3) + a(n-4), where a(0) = 2, a(1) = 0, a(2) = 1, a(3) = 1.at n=23A295684
• Least k > 1 such that k^n is a twin rank (cf. A002822: 6*k^n +- 1 are twin primes).at n=35A326230
• Numbers k such that sopfr(k + sopfr(k)) = sopfr(k) + sopfr(sopfr(k)), where sopfr = A001414.at n=28A376851