26627

Properties

Appears in sequences

• Number of positive integers <= 2^n of form x^2 + 16*y^2.at n=18A000018
• a(n) is the n-th term in sequence A_n, respecting the offset, or a(n) = -1 if A_n has fewer than n terms.at n=17A051070
• Primes p from A031924 such that A052180(primepi(p)) = 31.at n=9A052237
• Smallest number whose shortest Lucas chain is of length n.at n=22A104892
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1101-0111-0001 pattern in any orientation.at n=14A147237
• Number of strings of numbers x(i=1..7) in 0..n with sum i^4*x(i) equal to 2401*n.at n=18A184353
• 2*n^3 - 313*n^2 + 6823*n - 13633.at n=12A218456
• Least k > 1 such that n*(k*n-1) - 1 divides n^(k*n-1) - 1, or 0 if no such k exists.at n=9A273772
• Prime generating polynomial: a(n) = (4*n - 29)^2 + 58.at n=47A320772
• Primes having only {2, 6, 7} as digits.at n=18A385787
• Primes having only {0, 2, 6, 7} as digits.at n=32A386051
• Primes having only {2, 4, 6, 7} as digits.at n=35A386155
• Primes having only {2, 5, 6, 7} as digits.at n=38A386160
• Primes having only {2, 6, 7, 8} as digits.at n=37A386165
• Lesser of sexy happy primes.at n=35A387258
• Prime numbersat n=2919