137346

Appears in sequences

• Numbers k such that 2^k == -1 (mod k-1).at n=9A055685
• Numbers k such that 8^k == -1 (mod k-1).at n=21A055691
• Third column (m=4) of array A090452.at n=32A090453
• a(0) = 3; a(n) = a(n-1)*(a(n-1)^2 - 3*a(n-1) + 4)/2.at n=3A296374