A121150 - OEIS

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A121150

Minimal number of vertices in an n-polyomino.

1

4, 6, 8, 9, 11, 12, 14, 15, 16, 18, 19, 20, 22, 23, 24, 25, 27, 28

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

OFFSET

1,1

COMMENTS

It appears that a(n) = A080037[n] = n + Floor[Sqrt[4n-3]] + 2 for n>0.

LINKS

Table of n, a(n) for n=1..18.

Eric Weisstein's World of Mathematics, Polyomino.

CROSSREFS

Sequence in context: A100373 A211302 A123938 * A049579 A137242 A098015

Adjacent sequences: A121147 A121148 A121149 * A121151 A121152 A121153

KEYWORD

nonn,more

AUTHOR

Alexander Adamchuk, Aug 12 2006

EXTENSIONS

a(17)-a(18) from John Mason, Aug 14 2021

STATUS

approved