22851

Appears in sequences

• a(n) = least number not of form [ (a^2/n) ] + [ (b^2)/n ].at n=29A036575
• Numbers k such that the decimal digits of phi(k) are a permutation of those of k.at n=29A115921
• A vector recursion sequence: k = -3; m = 3; l = -3; a(n)=k*{0,a(n-2),0}+m*{-(m-1)/m,a(n-1)}++m*{a(n-1),-(m-1)/m}+l*{0,0,a(n-4),0,0}.at n=40A152655
• Expansion of Sum_{k>=0} (x * (1 + k^2 * x))^k.at n=7A360684