[go: up one dir, main page]
login
The OEIS is supported by the many generous donors to the OEIS Foundation.
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A359523
Number of free polyiamonds of n cells with multiply-connected interiors.
1
1, 2, 12, 51, 217, 846, 3211
(list; graph; refs; listen; history; text; internal format)
OFFSET
12,2
LINKS
Table of n, a(n) for n=12..18.
FORMULA
a(n) = A070764(n) - A359524(n).
CROSSREFS
Cf. A000577, A070764, A359519, A359524.
Sequence in context: A012695 A012382 A198008 * A323851 A054667 A009537
Adjacent sequences: A359520 A359521 A359522 * A359524 A359525 A359526
KEYWORD
nonn,more
AUTHOR
John Mason, Jan 05 2023
STATUS
approved

Lookup Welcome Wiki Register Music Plot 2 Demos Index WebCam Contribute Format Style Sheet Transforms Superseeker Recents
The OEIS Community
Maintained by The OEIS Foundation Inc.
Last modified November 7 12:11 EST 2024. Contains 377535 sequences.
License Agreements, Terms of Use, Privacy Policy