-1691

Appears in sequences

• tanh(arctan(arcsin(x)))=x-3/3!*x^3+49/5!*x^5-1691/7!*x^7+108961/9!*x^9...at n=3A012199
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 5.at n=46A060024
• Sequence of coefficients arising in study of generating function for A067619.at n=41A186545
• The sequence of coefficients of cubic polynomials p(x-n), where p(x) = x^3 - 3*x + 1.at n=51A218332
• G.f.: Sum_{n=-oo..+oo} x^(n^2) / (1 - x^n)^n.at n=60A261605
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 489", based on the 5-celled von Neumann neighborhood.at n=29A272513