29629

Properties

Appears in sequences

• 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 12.at n=27A031600
• Least prime in A023200 (lesser of 4-twins) such that the distance to the next 4-twin is 6*n.at n=33A052351
• Primes p whose period of reciprocal equals (p-1)/9.at n=20A056214
• Integer part of log(n!)^(1 + log(log(1 + n))).at n=34A062475
• Nearest integer to log(n!)^(1 + log(log(1 + n))).at n=34A062476
• Triangle T(n,k) read by rows; given by [0,1,0,1,0,1,0,1,...] DELTA [1,0,1,1,1,2,1,3,1,4,1,5,...], where DELTA is the operator defined in A084938.at n=61A085791
• Largest prime factor of n!! + (n+1)!!.at n=25A118333
• Primes of the form XYX, where Y is a single digit.at n=39A154270
• Prime indices of primes with digits in strictly increasing order.at n=13A155774
• Primes of form a^2+b^2 such that a^4+b^4 and a^8+b^8 are primes.at n=23A182313
• Smallest k such that (10^n+k, 10^n+k+2) and (10^(n+1)+k, 10^(n+1)+k+2) are two pairs of twin primes.at n=10A224905
• Primes of the form abcabc..abcab.at n=24A228627
• Values of n such that prime(n) does not divide any 10-digit pandigital number (i.e. any value in A050278).at n=11A292703
• Primes p such that A001175(p) = (p-1)/9.at n=16A308794
• Largest prime number p such that x^n + y^n mod p does not take all values on Z/pZ.at n=33A355920
• G.f. A(x) satisfies 1/x = Sum_{n=-oo..+oo} A(x)^n * (A(x)^n + 3)^(n+1).at n=5A379203
• Primes having only {2, 6, 9} as digits.at n=20A385788
• Primes having only {0, 2, 6, 9} as digits.at n=36A386052
• Primes having only {2, 4, 6, 9} as digits.at n=38A386156
• Primes having only {2, 5, 6, 9} as digits.at n=41A386161