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A133463 Partial sums of the sequence that starts with 2 and is followed by A111575. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Table of n, a(n) for n=0..44.
FORMULA
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, Jan 12 2008
MAPLE
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, Jan 12 2008
MATHEMATICA
Accumulate[Join[{2}, With[{pt=3^Range[0, 15]}, Sort[Join[pt, pt, pt, pt]]]]] (* Harvey P. Dale, Jul 21 2021 *)
CROSSREFS
Sequence in context: A036027 A036032 A008813 * A187550 A307818 A358033
Adjacent sequences: A133460 A133461 A133462 * A133464 A133465 A133466
KEYWORD
nonn
AUTHOR
Paul Curtz, Nov 28 2007
EXTENSIONS
Edited and extended by R. J. Mathar, Jan 12 2008
STATUS
approved

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Last modified September 8 17:50 EDT 2024. Contains 375753 sequences. (Running on oeis4.)