login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A153554 Number of planar n X n X n binary triangular grids with no more than 5 ones in any similarly oriented 3 X 3 X 3 subtriangle. 0
1, 2, 8, 63, 981, 30204, 1838258, 221168494, 52603569364, 24733230863897, 22989019296091325, 42240982234024058721, 153433971895782184082591, 1101749861754584729817380799, 15639340662707098047927162649965 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

CROSSREFS

Sequence in context: A098000 A084279 A153526 * A139018 A110708 A295232

Adjacent sequences:  A153551 A153552 A153553 * A153555 A153556 A153557

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 2 18:11 EST 2021. Contains 349445 sequences. (Running on oeis4.)