-893025

Appears in sequences

• arctan(sin(arctanh(x)))=x-1/3!*x^3+9/5!*x^5-225/7!*x^7+3345/9!*x^9...at n=5A012054
• exp(arcsinh(arcsinh(x))) = 1+x+1/2!*x^2-1/3!*x^3-7/4!*x^4+9/5!*x^5...at n=11A012252
• Row 2 of array in A288580.at n=9A092396
• Triangle M(k,n) read by rows: coefficients of Meixner polynomials.at n=34A094368
• Triangle read by rows: coefficients in expansion of Q(n) = (x-n^2)*(x-(n-2)^2)*(x-(n-4)^2)*...*(x-(1 or 2)^2), highest powers first.at n=34A182971
• E.g.f. log(1 + sin(arctan(x))).at n=11A191011
• Array read by upwards antidiagonals: T(n,k) = Product_{ 0 < |n-k*i| <= n} (n-k*i), with n >= 0, k >= 1.at n=64A288580
• Triangle T(n, k) read by rows: Row n gives the coefficients of the even powers in Product_{t=1..n}(2*x - (2*t - 1))*Product_{t=1..n}(2*x + (2*t - 1)).at n=20A380570