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Search: id:A116975
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| A116975 |
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Number of compositions of n into parts of sizes == 1 mod 5 or 4 mod 5. |
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+0
2
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| 1, 1, 1, 2, 3, 5, 7, 10, 15, 23, 35, 52, 77, 115, 173, 260, 389, 581, 869, 1302, 1951, 2921, 4371, 6542, 9795, 14667, 21959, 32872, 49209, 73671, 110297, 165128, 247209, 370089, 554057, 829482, 1241819, 1859117, 2783263, 4166802
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OFFSET
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1,4
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FORMULA
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G.f.: x*(1+x^3)/(1-x-x^4-x^5). - Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 02 2006
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EXAMPLE
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a(8)=10 : 611, 161, 116, 44, 41111, 14111, 11411, 11141, 11114, 11111111
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CROSSREFS
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Sequence in context: A076972 A003410 A018133 this_sequence A134792 A033068 A052011
Adjacent sequences: A116972 A116973 A116974 this_sequence A116976 A116977 A116978
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), Apr 01 2006
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 02 2006
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