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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A037607 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,3. 0
1, 9, 66, 463, 3243, 22704, 158929, 1112505, 7787538, 54512767, 381589371, 2671125600, 18697879201, 130885154409, 916196080866, 6413372566063, 44893607962443, 314255255737104, 2199786790159729 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..19.

Index entries for linear recurrences with constant coefficients, signature (7,0,1,-7).

FORMULA

G.f.: x*(1+2*x+3*x^2) / ( (x-1)*(7*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015

MATHEMATICA

Module[{nn=20, t}, t=PadRight[{}, nn, {1, 2, 3}]; Table[FromDigits[Take[t, i], 7], {i, nn}]] (* Harvey P. Dale, Oct 02 2013 *)

CROSSREFS

Sequence in context: A002695 A003408 A037698 * A055148 A014830 A048439

Adjacent sequences:  A037604 A037605 A037606 * A037608 A037609 A037610

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling

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 December 14 01:27 EST 2019. Contains 329978 sequences. (Running on oeis4.)