159200

Appears in sequences

• Numbers n such that core(n)=floor(sqrt(n)), where core(x)=A007913(x) is the squarefree part of x and floor(sqrt(x))=A000196(x).at n=25A069186
• a(n) = (n^2-1)^2-1.at n=20A178392
• Numbers in A249406 that are not of the form m*(m+1).at n=5A249408
• Numbers k such that k and k+1 are both half-Zumkeller numbers (A246198).at n=17A331371