188286357654
domain: N
Appears in sequences
- Pisot sequences E(2,6), L(2,6), P(2,6), T(2,6).at n=23A008776
- a(0)=1; a(n) = 2*3^(n-1) for n >= 1.at n=24A025192
- a(n) = Sum_{k=0..m} (k+1) * A026148(n, m-k), where m=0 for n=1; m=n+1 for n >= 2.at n=23A027334
- Binomial transform of a Jacobsthal trisection.at n=12A092810
- a(n) = A003474(n)/n.at n=26A094678
- Expansion of (1+3*x)/(1-3*x).at n=23A099856
- a(1) = 3, a(n+1) = 2*(3^n).at n=23A110593
- Number of (n+1) X 2 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases.at n=21A206143