114051

Appears in sequences

• a(n) = a(n-1) + a(n-4) with a(0) = 0, a(1) = a(2) = a(3) = 1.at n=39A003269
• Expansion of (1-x)/(1-x-x^4).at n=42A017898
• Expansion of (1-x)*(1+x)/(1-x-2*x^2+x^4).at n=19A052535
• a(n) is its own 4th difference.at n=9A055990
• Expansion of -x - x^3*(2 -2*x^4 +x^5)/((1-x^2)*(1+x+x^4)).at n=37A089076
• Sum C(n-3k,k-1), k=0..floor(n/4).at n=41A099561
• G.f. A(x) satisfies: A( A(x)^2 ) = C(x) * A(x), where C(x) = x + C(x)^2, with A(0)=0, A'(0)=1.at n=12A272483
• Number of compositions (ordered partitions) of n into squares not greater than sqrt(n).at n=38A369342