30554

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 13.at n=27A031601
• Number of different 0-moment rowing configurations for 4n rowers.at n=5A168238
• Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.at n=18A298584