51787

Properties

Appears in sequences

• Primes p = p(k) such that p(k) + p(k+9) = p(k+1) + p(k+8) = p(k+2) + p(k+7) = p(k+3) + p(k+6) = p(k+4) + p(k+5).at n=4A064103
• a(n) is the smallest number that cannot be obtained from the numbers {2^0,2^1,...,2^n} using each number at most once and the operators +, -, *, /. Parentheses are allowed, intermediate fractions are not allowed.at n=8A071314
• Primes of the form 13*n^2+3*n+1.at n=30A176783
• Number of 0..n arrays x(0..4) of 5 elements with nondecreasing average value.at n=13A200765
• Main diagonal of array A255551.at n=37A255550
• Beginning with 11, least prime such that concatenation of first n terms and its digit reversal both are primes.at n=17A380227
• Prime numbersat n=5298