31722

Appears in sequences

• Numbers k such that 3^k - 2 is prime.at n=27A014224
• The numbers n in s=n^2 + (n+1)^2 that satisfy the requirement for two consecutive squares c,d with c<d with d-c being the sum of two consecutive squares that c<s<d will give s-c and d-s both being squares.at n=25A192743
• Squarefree numbers n such that n^2 + 1 and n^2 - 1 are semiprime.at n=34A268697