35303692060
domain: N
Appears in sequences
- a(n) = (9^n - 1)/8.at n=12A002452
- Coloring a circuit with 4 colors.at n=23A006342
- Gaussian binomial coefficients [ n,11 ] for q = 9.at n=1A022262
- Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.at n=22A033113
- Numbers of the form (9^{mr}-1)/(9^r-1) for positive integers m, r.at n=29A076288
- a(n) = Sum_{k=0..floor(n/2)} binomial(n-k, k-1)*2^(n-k-1)*(3/2)^(k-1).at n=24A099583
- a(n) = Sum_{j=0..11} n^j.at n=9A105067
- If n mod 2 = 0 then (3^(n+3)-19)/8 else (3^(n+3)-1)/8.at n=21A116973
- a(n) = (3^n-1)/2 if n odd, (3^n-1)/8 if n even.at n=24A152298
- Expansion of 1/((x-1)*(3*x-1)*(3*x^2+1)).at n=22A239577
- Triangular numbers that are palindromes in base 3.at n=21A350990