1342177280

Appears in sequences

• Expansion of (1+x)/(1-4*x).at n=15A003947
• a(n) = 5 * 2^n.at n=28A020714
• a(n) = n*8^(n-1).at n=10A053539
• Expansion of g.f.: (1+x^2)/(1-2*x).at n=30A084215
• a(0)=1, a(1)=5, a(n+2)=4a(n), n>0.at n=29A084568
• a(n) = Sum_{k=0..n} binomial(n+(-1)^k, k).at n=29A087940
• Number of subsets of {1,.., n} containing exactly one square.at n=32A089889
• Number of subsets of {1,.., n} containing exactly two squares.at n=31A089890
• Expansion of (1-4x+6x^2-3x^3)/(1-5x+9x^2-8x^3+4x^4).at n=28A093041
• Expansion of (1+x)^2/(1-4*x^2).at n=30A104721
• Binomial transform of A010685.at n=29A146523
• a(0)=7, a(n) = 2*a(n-1) + 2^(n-1) for n > 0.at n=26A159695
• Index of first multiple of n-th prime in A005179.at n=24A161177
• Number of binary strings of length n with equal numbers of 001 and 100 substrings.at n=31A164143
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^16 = I.at n=15A167896
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^17 = I.at n=15A168682
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^18 = I.at n=15A168730
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^19 = I.at n=15A168778
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^20 = I.at n=15A168826
• Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^21 = I.at n=15A168874