398161

Appears in sequences

• a(n) = prime^2 and digits of prime appear in a(n).at n=15A030081
• Smallest composite k such that phi(k) > k*(1-1/n^2).at n=24A069639
• Triangular numbers + 1 squared.at n=35A086601
• Unsigned member r=-7 of the family of Chebyshev sequences S_r(n) defined in A092184.at n=7A098307
• Number of nX2 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally.at n=9A189336
• Prime powers p^k with even exponents k > 0 such that (1 + p^k)/2 is prime.at n=30A192618
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y<2z.at n=29A212503
• Squares present in A259934.at n=5A262514
• Square numbers in A070552.at n=23A263951