A057766 Total area of all n-celled polyominoes.

1, 2, 6, 20, 60, 210, 756, 2952, 11565, 46550, 187803, 763200, 3101683, 12627594, 51398640, 209268080, 851834453, 3467196936, 14109860408, 57413439000, 233584274238, 950220869136, 3865081177744, 15719992809672, 63930676119100

Offset

1,2

Links

John Mason, Table of n, a(n) for n = 1..50

Andrew Clarke, Isoperimetrical Polyominoes [Link updated by William Rex Marshall, Dec 16 2009]

Formula

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

Crossrefs

Sequence in context: A363107 A136883 A289173 * A132353 A263900 A260696

Adjacent sequences: A057763 A057764 A057765 * A057767 A057768 A057769

Keyword

nonn

Author

N. J. A. Sloane, Nov 04 2000

Extensions

More terms from David Wasserman, Oct 26 2003

Status

approved