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A308414 Minimal number of moves after which a group of stones of one color with exactly n liberties is possible on an infinite board in Go. 0
7, 5, 3, 2, 1, 3, 3, 5, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..8.

Wikipedia, Go (game)

EXAMPLE

For n = 0: A white stone with 4 black stones adjacent to it has 0 liberties, which is possible after 7 moves, so a(0) = 7.

For n = 1: A white stone with 3 black stones adjacent to it has 1 liberty, which is possible after 5 moves (3 of black and 2 of white), so a(1) = 5.

For n = 2: A white stone with 2 black stones adjacent to it has 2 liberties, which is possible after 3 moves, so a(2) = 3.

For n = 3: A black stone with a single white stone adjacent to it has 3 liberties, which is possible after 2 moves, so a(3) = 2.

For n = 4: A single stone has 4 liberties, with that configuration possible after 1 move of black, so a(4) = 1.

For n = 5: A group of 2 black stones adjacent to a single white stone has 5 liberties, which is possible after 3 moves, so a(5) = 3.

For n = 6: A group of 2 black stones has 6 liberties, which is possible after 3 moves, so a(6) = 3.

For n = 7: A group of 3 black stones in a straight line with a single adjacent white stone or a group of 3 black stones in an L-shape have 7 liberties, both of which are possible after 5 moves, so a(7) = 5.

For n = 8: A group of 3 black stones in a straight line has 8 liberties, which is possible after 5 moves, so a(8) = 5.

CROSSREFS

Cf. A089071, A275346, A320666.

Sequence in context: A219242 A330920 A155816 * A335985 A093824 A203142

Adjacent sequences:  A308411 A308412 A308413 * A308415 A308416 A308417

KEYWORD

nonn,more

AUTHOR

Felix Fröhlich, May 25 2019

STATUS

approved

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Last modified October 26 11:29 EDT 2020. Contains 338027 sequences. (Running on oeis4.)