[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!)
A153995
Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 11 ones in any 5 X 5 X 5 subtriangle.
0
1, 2, 4, 16, 64, 480, 3736, 56603, 866980, 25953214, 787663876, 46715890643, 2808165369921, 329814202089783, 39245990906253437, 9118402420254407206, 2146932074632111803427
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Table of n, a(n) for n=0..16.
CROSSREFS
Sequence in context: A280132 A138870 A153992 * A153998 A154001 A154004
Adjacent sequences: A153992 A153993 A153994 * A153996 A153997 A153998
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 04 2009
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 October 6 10:33 EDT 2024. Contains 376576 sequences.
License Agreements, Terms of Use, Privacy Policy