64801

Appears in sequences

• Numbers n such that 69*2^n-1 is prime.at n=54A050560
• Numbers k such that 7*(10^k - 1)/9 - 3*10^floor(k/2) is a palindromic wing prime (also known as near-repdigit palindromic prime).at n=13A077781
• a(n) = 50*n^2 + 1.at n=35A157916
• a(n) = 72*n^2 + 1.at n=30A158740
• p^2 + (p+2)^2 - 1 where (p,p+2) is the n-th twin prime pair.at n=12A184417
• Number of 3Xn arrays containing n copies of 0..3-1 with no element 1 greater than its north, west or northwest neighbor modulo 3 and the upper left element equal to 0.at n=11A266833
• Number of partitions of the (n+4)-multiset {0,...,0,1,2,3,4} with n 0's into distinct multisets.at n=18A346824
• The number of unlabeled graded posets with n elements.at n=10A361912