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Search: id:A133463
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| A133463 |
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Partial sums of the sequence which starts with 2 and is followed by A111575. |
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1
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| 2, 3, 4, 5, 6, 9, 12, 15, 18, 27, 36, 45, 54, 81, 108, 135, 162, 243, 324, 405, 486, 729, 972, 1215, 1458, 2187, 2916, 3645, 4374, 6561, 8748, 10935, 13122, 19683, 26244, 32805, 39366, 59049, 78732, 98415, 118098, 177147, 236196, 295245, 354294
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OFFSET
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0,1
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FORMULA
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a(4n) = 2*A111575(4n). a(4n+1)= 3*A111575(4n+1). a(4n+2)= 4*A111575(4n+2). a(4n+3)= 5*A111575(4n+3) . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 12 2008
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MAPLE
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A111575 := proc(n) 3^(floor(n/4)) ; end: A133463 := proc(n) 2+add( A111575(i), i=0..n-1) ; end: seq(A133463(n), n=0..80) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 12 2008
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CROSSREFS
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Sequence in context: A036027 A036032 A008813 this_sequence A057492 A018123 A105859
Adjacent sequences: A133460 A133461 A133462 this_sequence A133464 A133465 A133466
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KEYWORD
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nonn
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Nov 28 2007
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EXTENSIONS
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Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 12 2008
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