3985808

Appears in sequences

• a(n) = (5*3^(n-1)+1)/2.at n=13A057198
• a(n) = 2*n*3^(n-1) - (3^n-1)/2.at n=12A176177
• a(1) = 1, then A007051 ((3^n)+1)/2 interleaved with A057198 (5*3^(n-1)+1)/2.at n=28A246360
• Row sums of A321624.at n=14A321573