73817

Appears in sequences

• Triangle of coefficients of generating function of 5-ary rooted trees of height at most n.at n=65A036607
• Number of 5-ary rooted trees with n nodes and height at most 4.at n=23A036615
• The values of c in a^2 + b^2 = c^2 where b - a = 23 and gcd(a,b,c) = 1.at n=9A117475
• Positive numbers y such that y^2 is of the form x^2+(x+23)^2 with integer x.at n=15A156567
• a(n) = 6*a(n-1)-a(n-2) for n > 2; a(1)=17, a(2)=65.at n=5A156570
• Numbers n such that n'' = n'+1 where n' and n'' are respectively the first and the second arithmetic derivative of n (A003415).at n=16A189639
• Numbers k for which sigma(k) = k + k'', where k'' is the second derivative of k (A068346).at n=17A348426