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A036887
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Number of partitions of 5n such that cn(1,5) = cn(4,5) <= cn(2,5) = cn(3,5) < cn(0,5).
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5
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1, 2, 4, 10, 25, 62, 145, 323, 689, 1417, 2831, 5517, 10532, 19734, 36377, 66042, 118240, 208929, 364689, 629238, 1073964, 1814246, 3035236, 5031509, 8268583, 13476606, 21793642, 34981783, 55753411, 88258773, 138813831, 216978085, 337147547
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Alternatively, number of partitions of 5n such that cn(2,5) = cn(3,5) <= cn(1,5) = cn(4,5) < cn(0,5).
For a given partition, cn(i,n) means the number of its parts equal to i modulo n.
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LINKS
| Index and properties of sequences related to partitions of 5n
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FORMULA
| a(n) = A036882(n) - A036889(n)
a(n) = A202086(n) + A036895(n)
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CROSSREFS
| Sequence in context: A000458 A089928 A173610 * A151536 A026269 A000645
Adjacent sequences: A036884 A036885 A036886 * A036888 A036889 A036890
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KEYWORD
| nonn
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AUTHOR
| Olivier Gerard (olivier.gerard(AT)gmail.com)
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EXTENSIONS
| Terms a(10) onward from Max Alekseyev (maxale(AT)gmail.com), Dec 10 2011
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