login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A370964 a(n) = number of "weakly lonesum" 2 X 2 X n tensors. 3
1, 16, 254, 4006, 62834, 980926, 15251714, 236305246, 3649992194, 56225671966, 864046126274, 13249946549086, 202798763405954, 3098675363464606, 47273845225223234, 720219685203906526, 10958863373616410114, 166560903942055522846, 2528904905860164038594 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Don Knuth, Parades and poly-Bernoulli bijections, Mar 31 2024. See (19.13).
Filip Stappers, Problems concerning parades and poly-Bernoulli numbers, 2024. See Problem 9.
FORMULA
From Filip Stappers, Aug 25 2024: (Start)
a(n) = 2*15^n - 14^n.
G.f.: (1-13*z) / ((1-15*z)*(1-14*z)). (End)
CROSSREFS
Sequence in context: A317894 A228982 A158531 * A171321 A077412 A208498
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Apr 04 2024
EXTENSIONS
a(7) from Michael S. Branicky, Apr 07 2024
a(0) and more terms from Filip Stappers, Aug 25 2024
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 15 03:00 EDT 2024. Contains 375931 sequences. (Running on oeis4.)