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

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A166092 Integers (all of the form 4k+3) organized into an array based on the number of times Sum_{i=1..u} J(i,4k+3) obtains value zero when u ranges from 1 to (4k+3), where J(i,k) is the Jacobi symbol. 8
3, 7, 11, 15, 319, 19, 23, 607, 35, 415, 31, 703, 59, 1639, 91, 39, 895, 63, 2359, 175, 43, 47, 1063, 103, 3995, 575, 127, 51, 55, 1103, 131, 5191, 631, 295, 83, 67, 71, 1135, 251, 5459, 731, 635, 223, 115, 27, 79, 1447, 279, 7567, 1175, 659, 735, 139 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Note: these are all of the form 4k+3, but still this is not permutation of A004767 (for the reason explained in A166091). Sequence A165603 gives the 4k+3 integers missing from this table.This square array A(row>=0, col>=0) is listed antidiagonally as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...

LINKS

A. Karttunen, Table of n, a(n) for n = 0..10010

EXAMPLE

The top left corner of the array:

3, 7, 15, 23, 31, 39, ...

11, 319, 607, 703, 895, 1063, ...

19, 35, 59, 63, 103, 131, ...

415, 1639, 2359, 3995, 5191, 5459, ...

91, 175, 575, 631, 731, 1175, ...

CROSSREFS

a(n) = A004767(A166091(n)). The leftmost column: A166096. The first five rows: A165469, A166053, A166055, A166057, A166059. Cf. also A112070.

Sequence in context: A145052 A100900 A117829 * A184913 A022821 A001618

Adjacent sequences:  A166089 A166090 A166091 * A166093 A166094 A166095

KEYWORD

nonn,tabl

AUTHOR

Antti Karttunen, Oct 08 2009

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 13 19:20 EST 2017. Contains 295976 sequences.