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Search: id:A047861
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| 1, 6, 17, 41, 93, 205, 445, 957, 2045, 4349, 9213, 19453, 40957, 86013, 180221, 376829, 786429, 1638397, 3407869, 7077885, 14680061, 30408701, 62914557, 130023421, 268435453, 553648125, 1140850685, 2348810237, 4831838205
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OFFSET
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0,2
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FORMULA
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Main diagonal of the array defined by T(0, j)=j+1 j>=0, T(i, 0)=i+1 i>=0, T(i, j)=T(i-1, j-1)+T(i-1, j)+ 3; a(n)=2^(n-1)*(n+8)-3 - Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 17 2003
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CROSSREFS
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n-th difference of a(n), a(n-1), ..., a(0) is (5, 6, 7, ...).
Sequence in context: A061349 A101945 A013319 this_sequence A099858 A062020 A066183
Adjacent sequences: A047858 A047859 A047860 this_sequence A047862 A047863 A047864
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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