56249

Properties

Appears in sequences

• Denominators of continued fraction convergents to sqrt(657).at n=16A042263
• Primes from merging of 5 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2.at n=28A103809
• Primes of the form 10*k^2 - 1.at n=13A143828
• Primes p such that 12*p^3+-1 are twin primes.at n=32A158297
• Primes p such that 2*p^4+-9 are also prime.at n=27A174365
• Primes p such that p^p ends in p and p is not congruent to 1 (mod 10).at n=12A177192
• Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <=2.at n=7A195885
• T(n,k) = Number of lower triangles of an n X n integer array with all row and column sums zero and all row and column sums of squares <= 2k^2.at n=35A195892
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=15A207107
• Primes p such that the decimal expansion of p^5 ends in p.at n=26A224904
• Number of simple connected graphs with n nodes that have no subgraph isomorphic to diamond graph or the bowtie graph.at n=9A243567
• Primes for which the concatenation of the digits in the even positions and the concatenation of the digits in the odd positions are squares.at n=41A275797
• Primes of the form 2^a * 3^b * 5^c - 1 for positive a, b, c.at n=41A293425
• Primes such that the next 10 prime gaps are all distinct.at n=10A372550
• Prime numbersat n=5706