A057766 - OEIS

%I #20 Apr 15 2023 12:27:14

%S 1,2,6,20,60,210,756,2952,11565,46550,187803,763200,3101683,12627594,

%T 51398640,209268080,851834453,3467196936,14109860408,57413439000,

%U 233584274238,950220869136,3865081177744,15719992809672,63930676119100

%N Total area of all n-celled polyominoes.

%H John Mason, <a href="/A057766/b057766.txt">Table of n, a(n) for n = 1..50</a>

%H Andrew Clarke, <a href="http://www.recmath.com/PolyPages/PolyPages/Isopolyos.html">Isoperimetrical Polyominoes</a> [Link updated by _William Rex Marshall_, Dec 16 2009]

%F a(n) = n*A000105(n).

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Nov 04 2000

%E More terms from _David Wasserman_, Oct 26 2003