A005182 a(n) = floor(e^((n-1)/2)). (Formerly M1057)

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

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 * A329397 A172524 A094925

Adjacent sequences: A005179 A005180 A005181 * A005183 A005184 A005185

Keyword

nonn

Author

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

Status

approved