412789

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 51.at n=19A031639
• Number of odd p-trees of weight n (all proper terminal subtrees have odd weight).at n=26A300436
• Number of p-trees of weight 2n + 1 in which all outdegrees are odd.at n=13A318485