125524238436
domain: N
Appears in sequences
- Expansion of (1+x)/(1-3*x).at n=23A003946
- a(1)=1, a(2)=2, a(n) = 4*3^(n-3) for n >= 3.at n=24A025579
- a(n) = Sum_{k=0..m} (k+1) * A026120(n, m-k), where m=0 for n=0,1; m=n for n >= 2.at n=23A027327
- Number of compositions of n into 2*j-1 kinds of j's for all j>=1.at n=24A052156
- a(n) = n^2*3^n.at n=18A127960
- a(n) = (7*3^n - (-3)^n)/6.at n=23A133125
- Denominator of Euler(n, 1/9).at n=11A156218
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^24 = I.at n=23A169017
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^25 = I.at n=23A169065
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^26 = I.at n=23A169113
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^27 = I.at n=23A169161
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^28 = I.at n=23A169209
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^29 = I.at n=23A169257
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^30 = I.at n=23A169305
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^31 = I.at n=23A169353
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^32 = I.at n=23A169401
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^33 = I.at n=23A169449
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^34 = I.at n=23A169497
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^35 = I.at n=23A169545
- Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^36 = I.at n=23A170013