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A203429
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a(n) = w(n+1)/(3*w(n)), where w = A203428.
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2
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-2, 27, -576, 16875, -629856, 28588707, -1528823808, 94143178827, -6561000000000, 510526328421483, -43873901280755712, 4127185885192141707, -421812572812955541504, 46542953399578857421875
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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(* First program *)
f[j_]:= 1/(3*j); z = 16;
v[n_]:= Product[Product[f[k] - f[j], {j, k-1}], {k, 2, n}]
1/Table[v[n], {n, z}] (* A203428 *)
Table[v[n]/(3*v[n+1]), {n, z}] (* A203429 *)
(* Second program *)
Table[-(-3)^(n-1)*(n+1)^n, {n, 20}] (* G. C. Greubel, Sep 28 2023 *)
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PROG
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(Magma) [-(-3)^(n-1)*(n+1)^n: n in [1..20]]; // G. C. Greubel, Sep 28 2023
(SageMath) [-(-3)^(n-1)*(n+1)^n for n in range(1, 21)] # G. C. Greubel, Sep 28 2023
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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