28585

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 17.at n=14A031605
• Numbers n such that 17, n, n+1 are the sides of a Heron triangle, i.e., a triangle with integer sides and integer area.at n=15A145820
• Number of partitions p of n such that (number of numbers in p of form 3k+1) = (number of numbers in p of form 3k+2).at n=46A241738
• Number of set partitions of [4n] into 4-element subsets {i, i+k, i+2k, i+3k} with 1<=k<=n.at n=12A337520
• Number of odd-length integer partitions of n with integer mean.at n=54A361656
• Triangle read by rows: T(n,k) is the number of n-sided cycles with the property that one makes k turns to the right while following its edges.at n=51A365094
• Triangle read by rows: T(n,k) is the number of n-sided cycles with the property that one makes k turns to the right while following its edges.at n=57A365094
• Numbers k for which there exists m such that the sum from 1 to m and the sum from m + 1 to k are both perfect squares.at n=33A388659