26729

Properties

Appears in sequences

• Number of convex polygons of length 2n on square lattice whose leftmost bottom vertex and rightmost top vertex have the same x-coordinate.at n=6A005770
• T(n, 2*n-4), T given by A027960.at n=26A027966
• Primes p such that 11 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248).at n=22A080187
• Primes A005382(n) + A005384(n) - 1 with a twin prime A005382(n) + A005384(n) + 1.at n=32A099109
• Primes of the form 26k+1 generated recursively. Initial prime is 53. General term is a(n) = Min {p is prime; p divides (R^13 - 1)/(R - 1); p == 1 (mod 13)}, where Q is the product of previous terms in the sequence and R = 13*Q.at n=24A125037
• Primes of the form 10*k^2+14*k+5, k >= 0.at n=24A154412
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2<=x^2+y^2.at n=33A211634
• a(n) = A212392(n) / n.at n=7A212391
• Primes p such that p+2 and q are primes, where q is concatenation of binary representations of p and p+2: q = p * 2^L + p+2, where L is the length of binary representation of p+2: L=A070939(p+2).at n=36A232238
• Primes of the form 2*n^2+86*n+41.at n=33A243958
• Primes of the form k+(k+3)^2 where k is a nonnegative integer.at n=32A248697
• Primes p such that 2*p^3 + 1 and 2*p^3 + 3 are also primes.at n=17A252042
• Partial sums of A009927.at n=17A265038
• Primes that can be generated by the concatenation in base 4, in ascending order, of two consecutive integers read in base 10.at n=19A287302
• Primes of the form A321513(k) + 1 for some k > 0.at n=34A352966
• First of four consecutive primes p,q,r,s such that the sum of numerator and denominator of p/q + q/r, p/q + r/s, and q/r + r/s, are all prime.at n=15A355696
• Numbers k such that k and k+2 are both prime binary self (or Colombian) numbers (A374102).at n=39A374103
• Prime numbersat n=2934