26041

Properties

Appears in sequences

• Primes that are palindromic in base 5.at n=34A029973
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 15.at n=18A031603
• Numbers in which all pairs of consecutive base-5 digits differ by 2.at n=47A033083
• a(i) is a square mod a(j), i <> j.at n=24A034903
• Base 5 digits are, in order, the first n terms of the periodic sequence with initial period 1,3.at n=6A037577
• Denominators of continued fraction convergents to sqrt(56).at n=6A041097
• Denominators of continued fraction convergents to sqrt(224).at n=6A041419
• Primes p such that p-12, p and p+12 are consecutive primes.at n=26A053072
• Numbers n such that n, 10*n+1, 10*n+3, 10*n+7 and 10*n+9 are all primes.at n=6A067267
• Smallest prime that is the sum of prime(n) consecutive primes.at n=23A082277
• Smallest prime such that n*k(n)^2+n*k(n)+1 is a prime > (n-1)*k(n-1)^2+(n-1)*k(n-1)+1 with k(n)>1 or 0 if n=4 as no prime possible.at n=27A104995
• a(n) = n^3 - n^2 - 2*n + 1.at n=30A123972
• Expansion of (1-x)*x/(x^2-30*x+1).at n=3A157877
• Primes that become squares when prefixed with a 3.at n=5A167736
• Prime preperiodic part of the decimal expansion of 1/k as k runs through A065502.at n=28A175557
• Number of flat special rim-hook tableaux.at n=21A178940
• Primes of the form 7n^2 - 6.at n=6A201852
• Balanced primes which are the average of two successive semiprimes.at n=22A212820
• Lengths of binary representations of prime Fibonacci numbers.at n=30A215367
• Primes that are the sum of 25 consecutive primes.at n=32A215991