103801

Properties

Appears in sequences

• Quintan primes: p = (x^5 - y^5)/(x - y).at n=27A002649
• Prime numbers that are the sum of the first k lucky numbers, A046279(k), for some k.at n=14A046281
• Fourth term of strong prime sextets: p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1) > p(m+1)-p(m) > p(m+2)-p(m+1).at n=31A054816
• Primes arising in A099678.at n=10A100502
• Expansion of 1/(x^k*(1-x-3*x^(k+1))) for k=9.at n=40A143460
• Number of length n arrays of permutations of 0..n-1 with each element moved by -2 to 2 places and with no two consecutive increases.at n=25A263637
• Number of unrooted unlabeled connected four-regular maps on a compact closed oriented surface with n vertices (and thus 2*n edges).at n=6A292206
• Number of meanders of length n with Motzkin-steps avoiding the consecutive steps UD and HH.at n=16A329675
• Array read by antidiagonals: T(n,k) is the number of sensed k-regular combinatorial maps with n vertices, n >= 0, k >= 1.at n=51A380626
• Prime numbersat n=9914