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A195667 Length of the longest Sokoban game with n spaces. 2
1, 2, 3, 5, 9, 14, 17, 22, 27, 35, 40, 48, 59, 77, 88, 108, 124, 146 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

COMMENTS

This sequence grows exponentially, and the base is known to be somewhere between phi and 2. - Zachary DeStefano, Jun 05 2021

LINKS

Table of n, a(n) for n=3..20.

Zachary DeStefano and qqwref, Sokoban Max Moves Archive

Erich Friedman, Problem of the month March 2000

Wikipedia, Sokoban

EXAMPLE

From Zachary DeStefano, Jun 05 2021: (Start)

In standard Sokoban notation, for n = 14 the a(14) = 48 board is:

#####

##@.#

##$ #

# #

# #$###

# *.#

#######

(End)

CROSSREFS

Cf. A195668, A195669.

Sequence in context: A309289 A220315 A070819 * A005244 A058541 A023672

Adjacent sequences: A195664 A195665 A195666 * A195668 A195669 A195670

KEYWORD

nonn,more,hard

AUTHOR

Kausthub Gudipati, Sep 22 2011

EXTENSIONS

a(11) corrected and a(15)-a(17) added by Zachary DeStefano, Jun 05 2021

a(18)-a(20) from Zachary DeStefano, Jul 29 2021

STATUS

approved

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Last modified January 30 05:55 EST 2023. Contains 359939 sequences. (Running on oeis4.)