169326

Appears in sequences

• a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)*3^(n-2*k).at n=10A100068
• Generalized Pascal Triangle - satisfying the same recurrence as Pascal's triangle, but with a(n,0)=1 and a(n,n)=10^n (instead of both being 1).at n=60A164844