590490

Appears in sequences

• Expansion of g.f.: (1+x)/(1-9*x).at n=6A003952
• a(n) = 10*3^n.at n=10A005052
• A traffic light problem: expansion of 2/(1 - 3*x)^3.at n=8A006043
• Numbers of form 9^i*10^j, with i, j >= 0.at n=22A025635
• a(n) = n*3^n.at n=10A036290
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=18A038299
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*9^j.at n=17A038299
• Sums of two distinct powers of 9.at n=20A038487
• Sums of two powers of 9.at n=26A055260
• Diagonal of table A062104.at n=13A062107
• a(n) = 3*a(n-2) + 3*a(n-3), a(0)=1, a(1)=0, a(2)=3.at n=19A099094
• Denominators of a ternary BBP-type formula for log(3).at n=9A154920
• Triangle T(n,k) formed by the coordination sequences and the number of leaves for trees.at n=61A158497
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.at n=6A164548
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.at n=6A164779
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.at n=6A165219
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^10 = I.at n=6A165788
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^11 = I.at n=6A166368
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^12 = I.at n=6A166543
• Number of reduced words of length n in Coxeter group on 10 generators S_i with relations (S_i)^2 = (S_i S_j)^13 = I.at n=6A166933