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EXAMPLE
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E.g.f.: A(x) = 1 + x + 5*x^2/2! + 44*x^3/3! + 581*x^4/4! + 10256*x^5/5! +...
where
1/(cos(x)-sin(x)) = 1 + x + 3*x^2/2! + 11*x^3/3! + 57*x^4/4! + 361*x^5/5! + 2763*x^6/6! +...+ A001586(n)*x^n/n! +...
The coefficient of x^n/n! in powers of G(x) = 1/(cos(x)-sin(x)) begins:
G^1: [(1), 1, 3, 11, 57, 361, 2763, 24611, ..., A001586(n), ...];
G^2: [1,(2), 8, 40, 256, 1952, 17408, 177280, ..., A000828(n+1), ...];
G^3: [1, 3,(15), 93, 705, 6243, 63375, 724413, ...];
G^4: [1, 4, 24,(176), 1536, 15424, 175104, 2214656, ...];
G^5: [1, 5, 35, 295,(2905), 32525, 407435, 5638495, ...];
G^6: [1, 6, 48, 456, 4992, (61536), 841728, 12633216, ...];
G^7: [1, 7, 63, 665, 8001, 107527, (1592703), 25738265, ...];
G^8: [1, 8, 80, 928, 12160, 176768, 2816000, (48706048), ...]; ...
where coefficients in parenthesis form the initial terms of this sequence:
[1/1, 2/2, 15/3, 176/4, 2905/5, 61536/6, 1592703/7, 48706048/8, ...].
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