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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A143125 Sum {j=1..n} j*A001462(j). 1
1, 5, 11, 23, 38, 62, 90, 122, 167, 217, 272, 344, 422, 506 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

FORMULA

Sum {j=1..n} j*A001462(j), where A001462 = Golomb's sequence, (1, 2, 2, 3, 3, 4, 4, 4,...). Row sums of triangle A143124.

EXAMPLE

a(4) = 23 = 1*1 + 2*2 + 3*2 + 4*12 = (1 + 4 + 6 + 12), given Golomb's sequence (1, 2, 2, 3, 3, 4, 4, 4,...).

a(4) = 23 = sum of row 4 terms of triangle A143124: (8 + 7 + 5 + 3).

CROSSREFS

Cf. A001462, A143124.

Sequence in context: A169744 A190148 A281875 * A147081 A046628 A262284

Adjacent sequences:  A143122 A143123 A143124 * A143126 A143127 A143128

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Jul 26 2008

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 October 22 06:54 EDT 2019. Contains 328315 sequences. (Running on oeis4.)