|
| |
|
|
A007335
|
|
MU-numbers: next term is uniquely the product of 2 earlier terms.
(Formerly M0794)
|
|
3
| |
|
|
2, 3, 6, 12, 18, 24, 48, 54, 96, 162, 192, 216, 384, 486, 768, 864, 1458, 1536, 1944, 3072, 3456, 4374, 6144, 7776, 12288, 13122, 13824, 17496, 24576, 31104, 39366, 49152, 55296, 69984, 98304, 118098, 124416, 157464, 196608, 221184, 279936
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
REFERENCES
| C. Pickover, Mazes for the Mind, St. Martin's Press, NY, 1992, p. 359.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
| R. Zumkeller, Table of n, a(n) for n = 1..100 (Corrected Jan 21 2008)
|
|
|
MATHEMATICA
| s={2, 3}; Do[n=Select[ Table[s[[j]] s[[k]], {j, Length@s}, {k, j+1, Length@s}] // Flatten // Sort // Split, #[[1]] > s[[-1]] && Length[#] == 1 &][[1, 1]];
AppendTo[s, n], {39}]; s (* From Jean-François Alcover, Apr 22 2011 *)
|
|
|
CROSSREFS
| Cf. A054540.
Subsequence of A000423.
Sequence in context: A174801 A093687 A000423 * A103070 A079708 A096571
Adjacent sequences: A007332 A007333 A007334 * A007336 A007337 A007338
|
|
|
KEYWORD
| nonn,easy,nice
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
