26365

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 29.at n=4A031617
• a(n) = Sum_{i=0..n} binomial(i,floor(i/2)).at n=16A036256
• a(n) = Sum_{d|n} phi(d^4).at n=12A068970
• Number of rooted unlabeled ordered (plane) trees with 2n leaves such that i) every internal node has an even number of children and ii) every path from the root to a leaf is the same length.at n=14A219226
• Number of n X 3 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=20A240790
• Number of distinct residues of x^n (mod n^5), x=0..n^5-1.at n=12A365102