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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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1
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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
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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FORMULA
| 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
| a(8)=10 : 611, 161, 116, 44, 41111, 14111, 11411, 11141, 11114, 11111111
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CROSSREFS
| Sequence in context: A170877 A003410 A018133 * A134792 A033068 A052011
Adjacent sequences: A116972 A116973 A116974 * A116976 A116977 A116978
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KEYWORD
| nonn
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AUTHOR
| Jon Perry (perry(AT)globalnet.co.uk), Apr 01 2006
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EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 02 2006
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