27069

Appears in sequences

• Least k such that gcd(prime(k)+1, prime(k+1)+1) = 2n.at n=30A067603
• Numbers k such that k and 2*k, taken together are pandigital.at n=18A115922
• Number of (n+1) X (n+1) -6..6 symmetric matrices with every 2 X 2 subblock having sum zero and one or two distinct values.at n=16A211253
• Row sums of A273751.at n=35A274248
• Number of integer partitions of n having more than one permutation with all equal run-lengths.at n=40A383090