login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A322048 Final elements in rows when A322050 is displayed as a triangle. 4
1, 5, 15, 35, 81, 173, 357, 725, 1461, 2933, 5877, 11765, 23541, 47093, 94197, 188405 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Needs more terms and a b-file.

LINKS

Table of n, a(n) for n=1..16.

FORMULA

Conjectures: a(n) = 2*a(n-1) + 11 for n >= 5; G.f. = x*(6*x^4+2*x^2+2*x+1)/((1-x)*(1-2*x)).

a(n) = A322050(2^n) = A319019(2^n)/8. - M. F. Hasler, Dec 27 2018

CROSSREFS

Cf. A319018, A319019, A322049, A322050.

Sequence in context: A261441 A213580 A221140 * A143695 A019531 A321345

Adjacent sequences:  A322045 A322046 A322047 * A322049 A322050 A322051

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Dec 15 2018

EXTENSIONS

a(12)-a(16) from Rémy Sigrist, Dec 17 2018

Offset changed from 0 to 1 by M. F. Hasler, Dec 27 2018

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 August 18 08:57 EDT 2019. Contains 326077 sequences. (Running on oeis4.)