20465

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 65.at n=22A020404
• Maximal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}.at n=38A110610
• Numbers k such that there is 1 prime between 100*k and 100*k + 99.at n=20A186393
• Number of (n+4)X5 0..2 matrices with each 5X5 subblock idempotent.at n=1A224618
• Number of (n+4)X6 0..2 matrices with each 5X5 subblock idempotent.at n=0A224619
• T(n,k)=Number of (n+4)X(k+4) 0..2 matrices with each 5X5 subblock idempotent.at n=1A224625
• T(n,k)=Number of (n+4)X(k+4) 0..2 matrices with each 5X5 subblock idempotent.at n=2A224625
• Number of minimal dominating sets in the n-prism graph.at n=11A290336