92484

Appears in sequences

• Number of n-bead necklaces labeled with numbers -2..2 allowing reversal, with sum zero and first and second differences in -2..2.at n=15A208964
• Number of tilings of a 4 X n rectangle using T and Z tetrominoes.at n=17A233139
• Number of integers in n-th generation of tree T(3/2) defined in Comments.at n=30A274152
• a(n) = 2*binomial(n,2) + 3*binomial(n,3) + 4*binomial(n,4).at n=28A384852
• G.f. satisfies A(x) = -(A(x^3) + A(x^4)) / A(-x^2).at n=53A385915