301327047

Appears in sequences

• a(n) = 7*3^n.at n=16A005032
• a(n) = (7*3^n - 4*0^n)/3.at n=17A082541
• a(n) = (8*9^n + (-9)^n)/9.at n=9A083226
• a(n) = 3*a(n-1) for n>2; a(0)=1, a(1)=3, a(2)=7.at n=18A141495
• a(n) = 3*a(n-2) for n > 2; a(1) = 1; a(2) = 7.at n=33A166481
• (n-1)-st elementary symmetric function of the first n terms of A010684.at n=30A203230
• Least term of A094179 with exactly 2n divisors.at n=16A204046
• Least term of A004767 with exactly 2n divisors.at n=16A204086
• a(n+2) = 3*a(n), starting 4,7.at n=33A228879
• Expansion of g.f. (1-2*x)/(1-9*x).at n=9A270472
• Triangle related to the partitions of n in three colors, read by rows.at n=26A383348
• a(n) is the least number k with exactly n proper divisors, where all of them have binary weights that are different from the binary weight of k.at n=33A383364