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A005182 a(n) = floor(e^((n-1)/2)).
(Formerly M1057)
2
0, 1, 1, 2, 4, 7, 12, 20, 33, 54, 90, 148, 244, 403, 665, 1096, 1808, 2980, 4914, 8103, 13359, 22026, 36315, 59874, 98715, 162754, 268337, 442413, 729416, 1202604, 1982759, 3269017, 5389698, 8886110, 14650719, 24154952, 39824784 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=0..36.

R. K. Guy and N. J. A. Sloane, Correspondence, 1988.

MATHEMATICA

Floor[E^((Range[0, 40]-1)/2)] (* Harvey P. Dale, Mar 20 2016 *)

CROSSREFS

Sequence in context: A000071 A179111 A093607 * A172524 A094925 A289168

Adjacent sequences:  A005179 A005180 A005181 * A005183 A005184 A005185

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, R. K. Guy

STATUS

approved

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Last modified April 23 06:08 EDT 2019. Contains 322381 sequences. (Running on oeis4.)