346112

Appears in sequences

• a(n) = 8*a(n-1) - 8*a(n-2), a(0)=1, a(1)=4.at n=7A084130
• Sigma((8^n - 1)/7), where sigma(n) is the sum of positive divisors of n.at n=6A103968
• Column 3 of the array in A107735.at n=13A107734
• Numbers k such that A109631(k) + A109631(k+1) = A109631(k+2).at n=30A109651
• Number of (n+1) X 7 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.at n=15A206265
• Product of numbers m with 2 <= m <= n whose prime divisors all divide n.at n=25A243103
• Numbers whose prime factors are 2 and 13.at n=34A288162
• Numbers having a self-conjugate multiplicative partition into primes.at n=16A378633