236224

Appears in sequences

• a(0) = a(1) = 1; a(n+2) = 2*a(n+1) + 2*a(n).at n=13A026150
• Sylvester cyclotomic numbers for A002605.at n=25A105607
• Generalized NSW numbers.at n=6A107903
• Sequence arising from the factorization of F(n)=A002605 and L(n)=A080040 F(0)=0, F(1)=1, F(n)=2*F(n-1)+2*F(n-2), L(0)=2, L(1)=2, L(n)=2*L(n-1)+2*L(n-2).at n=12A127259
• Expansion of g.f.: x^2*(1 + x - x^2)/(1 - 2*x^2 - 2*x^4).at n=27A160444
• Elements of A160444, pairs of consecutive entries swapped.at n=26A160572
• Number of nX3 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.at n=4A201388
• Number of nX5 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.at n=2A201390
• T(n,k)=Number of nXk 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.at n=23A201393
• T(n,k)=Number of nXk 0..3 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other.at n=25A201393
• Expansion of 2*(1+x^2)/((1-x)*(1-x-2*x^3)).at n=21A227036