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A367253
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The number of ways of making change for 5n cents with Canadian coins (5, 10, 25, 100, 200).
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1
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1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 14, 16, 18, 20, 22, 24, 26, 30, 32, 36, 38, 42, 46, 50, 54, 58, 62, 68, 72, 78, 82, 88, 94, 100, 106, 112, 118, 128, 134, 144, 150, 160, 170, 180, 190, 200, 210, 224, 234, 248, 258, 272, 286, 300, 314, 328, 342, 362
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OFFSET
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0,3
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COMMENTS
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Since 2012 the Canadian penny has been discontinued. The coins now commonly used are the nickel (5 cents), the dime (10 cents), the quarter (25 cents), the loonie (100 cents), and the toonie (200 cents).
Number of partitions of n into parts 1, 2, 5, 20, 40. - Alois P. Heinz, Nov 11 2023
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LINKS
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Index entries for linear recurrences with constant coefficients, signature (1, 1, -1, 0, 1, -1, -1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, -1, 1, 0, -1, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, -1, 1, 0, -1, 1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 1, -1, 0, 1, -1, -1, 1).
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FORMULA
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G.f.: 1/((1-x)*(1-x^2)*(1-x^5)*(1-x^20)*(1-x^40)).
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MATHEMATICA
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a[n_]:=Length[FrobeniusSolve[{5, 10, 25, 100, 200}, 5*n]]; a/@Range[0, 100] (* Ivan N. Ianakiev, Nov 21 2023 *)
CoefficientList[Series[1/((1-x)*(1-x^2)*(1-x^5)*(1-x^20)*(1-x^40)), {x, 0, 1000}], x] (* Ray Chandler, Nov 22 2023 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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