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A361507
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a(0) = 1; thereafter a(n) = floor((9/4)*a(n-1)) + 1.
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4
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1, 3, 7, 16, 37, 84, 190, 428, 964, 2170, 4883, 10987, 24721, 55623, 125152, 281593, 633585, 1425567, 3207526, 7216934, 16238102, 36535730, 82205393, 184962135, 416164804, 936370810, 2106834323, 4740377227, 10665848761, 23998159713, 53995859355, 121490683549, 273354037986, 615046585469, 1383854817306, 3113673338939
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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REFERENCES
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N. Tokuda, An efficient Shell's method of sorting by generalized scheme, Department of Computer Science, Utunomiya University, 1989; 10 pages plus 9 unnumbered pages of tables and charts.
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LINKS
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MATHEMATICA
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NestList[Floor[9/4#]+1&, 1, 50] (* Paolo Xausa, Dec 02 2023 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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