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A090167
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Number of configurations of the 6 X 2 variant of the so-called "Sam Loyd" sliding block 15-puzzle that require a minimum of n moves to be reached, starting with the empty square in one of the corners.
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5
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1, 2, 3, 6, 11, 20, 36, 60, 95, 155, 258, 426, 688, 1106, 1723, 2615, 3901, 5885, 8851, 13205, 19508, 28593, 41179, 58899, 83582, 118109, 165136, 228596, 312542, 423797, 568233, 755727, 994641, 1296097, 1667002, 2119476, 2660415, 3300586, 4038877
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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LINKS
| Herman Jamke, Table of n, a(n) for n = 0..80 [The complete list of terms]
Hugo Pfoertner, Solutions of small n*2 sliding block puzzles.
Takaken, 11-Puzzle Page.
Takaken, No. 62 (11 puzzles).
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PROG
| See link in A089473.
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CROSSREFS
| Cf. A087725, A089473. Index of last sequence term: A090033. Other nonsquare sliding block puzzles: A090034, A090035, A090036, A090166.
Sequence in context: A191629 A131269 A047081 * A002985 A093608 A079976
Adjacent sequences: A090164 A090165 A090166 * A090168 A090169 A090170
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KEYWORD
| fini,nonn
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AUTHOR
| Hugo Pfoertner (hugo(AT)pfoertner.org), Nov 27 2003
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EXTENSIONS
| More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Oct 22 2006
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