-597

Appears in sequences

• Expansion of e.g.f. cos(tanh(x)*cos(x)), even powers only.at n=3A009091
• Shifts left and changes sign under Weigh transform.at n=20A038074
• Series expansion of (-3 - 2*x)/(1 + x - x^3) in powers of x.at n=51A078712
• Expansion of (1 - 3x)/(1 - x + 2x^2 - x^3).at n=25A119303
• Real part of (3 + 2i)^n.at n=5A121622
• Values of n such that L(3) and N(3) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=19A226923
• Values of n such that L(5) and N(5) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=27A226925
• Triangle in which row n consists of the coefficients in Sum_{m=0..n} x^m * Product_{k=m+1..n} (1-k*x), as read by rows.at n=24A248925
• Determinant of n X n Hankel matrix whose entries are 1-A010060(i+j), where A010060 is the Thue-Morse sequence.at n=18A274330
• L.g.f.: log(Product_{k>=1} 1/(1 - x^k/(1 + x))) = Sum_{k>=1} a(k)*x^k/k.at n=12A307675
• Starting at n, a(n) is the difference of the number of times we revisit spots coming from positive spots and the number of times we revisit spots coming from negative spots according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away.at n=39A324685
• G.f. A(x) satisfies A(x)^2 = A(x^2) + 2*A(x^3).at n=24A377255