11309767

Appears in sequences

• a(n+3) = a(n+2) + 3*a(n+1) + a(n).at n=21A111352
• Row sums of A181657.at n=35A181658
• a(n) = (3*b(n) + b(n-1) + 1)/2, where b = A005409.at n=17A328990