73729

Appears in sequences

• a(n) = 3*n*2^(n-1) + 1.at n=12A048474
• a(n) = 2*a(n-1) - 1 with a(0) = 10.at n=13A083705
• Pierpont semiprimes: semiprimes of the form (2^K)*(3^L)+1.at n=41A113432
• a(n) = n-th element of n-th row of triangle shown below.at n=18A115025
• a(n) = 72*n^2 + 1.at n=32A158740
• a(n) = 6*a(n-1)-8*a(n-2) for n > 10; a(0)=221, a(1)=1938, a(2)=8673, a(3)=73729, a(4)=589855, a(5)=7561526, a(6)=34593784, a(7)=218391421, a(8)=2116566392, a(9)=8522858480, a(10)=34225586144.at n=3A177422
• p^2 + (p+2)^2 - 1 where (p,p+2) is the n-th twin prime pair.at n=13A184417
• Inverse permutation to A305325.at n=42A336816
• Indices where A354169 is the sum of two consecutive powers of 2.at n=27A354775
• Integers of the form k*2^m + 1 where 0 < k <= m and k is odd.at n=50A361875