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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A128443 a(n)=Floor(n*3^(n/2)). 1
1, 6, 15, 36, 77, 162, 327, 648, 1262, 2430, 4629, 8748, 16414, 30618, 56819, 104976, 193187, 354294, 647747, 1180980, 2147793, 3897234, 7057034, 12754583, 23012070, 41452397, 74559107, 133923131, 240246014, 430467209, 770444114, 1377495071 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n)=T(n,n), where T is given by A128444.

LINKS

Table of n, a(n) for n=1..32.

CROSSREFS

Cf. A128444.

Sequence in context: A273490 A324221 A177206 * A245470 A135854 A221905

Adjacent sequences:  A128440 A128441 A128442 * A128444 A128445 A128446

KEYWORD

nonn

AUTHOR

Clark Kimberling, Mar 03 2007

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 July 8 19:20 EDT 2020. Contains 335524 sequences. (Running on oeis4.)