50575

Appears in sequences

• Square root of n has the same nonzero digit in each of the first 4 places to the right of the decimal point.at n=17A073585
• Numbers n that are the hypotenuse of exactly 12 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 12 ways.at n=19A097226
• a(n) = 81*n^2 - 2*n.at n=24A157507
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2>n.at n=37A211640
• Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2>=n.at n=37A211641
• Ordered trees with branches of length at most 3.at n=11A239106
• Abelian orders m for which there exist at least 4 groups of order m.at n=20A350323
• Numbers k such that k and k+1 have the same sum of 5-smooth divisors.at n=34A355713
• Numbers k such that A005940(k) is either k itself or its descendant in Doudna-tree, A005940.at n=49A364960
• Odd numbers k such that A005940(k) is either k itself or its descendant in Doudna-tree, A005940.at n=7A364961
• Integers k such that k = Sum k/(p_i + j), where p_i are the prime factors of k (with multiplicity). Case j = -2.at n=5A380900