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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A094117 Partial sums of A093349. 0
0, 1, 1, 2, 2, 3, 3, 10, 16, 23, 29, 36, 42, 49, 49, 50, 50, 51, 51, 52, 52, 59, 65, 72, 78, 85, 91, 98, 98, 99, 99, 100, 100, 101, 101, 108, 114, 121, 127, 134, 140, 147, 147, 148, 148, 149, 149, 150, 150, 199, 247, 296, 344, 393, 441, 490, 532, 575, 617, 660, 702, 745 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..62.

FORMULA

a(7^k)=(49^k-1)/16

PROG

(PARI) a(n)=sum(k=1, n, -sum(i=1, k-1, (-1)^i*7^valuation(i, 7)))

CROSSREFS

Sequence in context: A195952 A236545 A095060 * A097365 A156906 A216245

Adjacent sequences:  A094114 A094115 A094116 * A094118 A094119 A094120

KEYWORD

nonn

AUTHOR

Benoit Cloitre, May 03 2004

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 2 19:13 EST 2016. Contains 278683 sequences.