6973568801

Appears in sequences

• a(0)=1, a(n) = 3*a(n-1) + 2; a(n) = 2*3^n - 1.at n=20A048473
• a(n) = n*3^n - 1.at n=17A060352
• Primes of the form k*3^k - 1.at n=4A060353
• Primes of the form 2*3^k - 1.at n=6A079363
• 2*3^n-(-1)^n.at n=20A081632
• Smallest prime p such that 3^n divides p^2 - 1.at n=18A125609
• Smallest prime p such that 3^n divides p^2 - 1.at n=19A125609
• A048473 prefixed by two zeros.at n=22A154992
• a(n) = 2*9^n-1.at n=10A198859
• Generalized Woodall primes: any primes that can be written in the form n*b^n - 1 with n+2 > b > 2.at n=9A210340