251048476872
domain: N
Appears in sequences
- a(n) = 8*3^n.at n=22A005051
- a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0, |s(i) - s(i-1)| = 1 for i = 1,2,3; |s(i) - s(i-1)| <= 1 for i >= 4. Also a(n) = sum of numbers in row n+1 of the array T defined in A026082 and a(n) = 24*3^(n-4) for n >= 4.at n=25A026097
- First differences of 9^n (A001019).at n=12A055275
- Number of ternary trees (A001764) with n nodes and maximal diameter.at n=22A064017
- First differences of A003946.at n=24A080923
- a(n) = (8*3^n - 5*0^n)/3.at n=23A083583
- Number of palindromes of length n (in base 9).at n=22A117861
- Number of palindromes of length n (in base 9).at n=23A117861
- Coefficient of q^n in (1-q)^3/(1-3q); dimensions of the enveloping algebra of the derived free Lie algebra on 3 letters.at n=25A118264
- a(n) = (n^3 - n^2)*9^n.at n=8A128992