A011187 - OEIS

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A011187

Number of ways to choose 2^n vectors in {0, 1, 2, 3}^n such that any two differ by at least 2 in at least one coordinate (2^n being maximal).

3, 79, 457645

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..3.

CROSSREFS

Sequence in context: A065399 A265592 A105065 * A327250 A197248 A183265

Adjacent sequences: A011184 A011185 A011186 * A011188 A011189 A011190

KEYWORD

nonn,bref,hard

AUTHOR

Jan Kristian Haugland

STATUS

approved