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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A172049 Irregular triangle T(n,k) = 2k-1 with A008794(n+2) values in row n. 0

%I

%S 1,1,1,3,5,7,1,3,5,7,1,3,5,7,9,11,13,15,17,1,3,5,7,9,11,13,15,17,1,3,

%T 5,7,9,11,13,15,17,19,21,23,25,27,29,31,1,3,5,7,9,11,13,15,17,19,21,

%U 23,25,27,29,31,1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43

%N Irregular triangle T(n,k) = 2k-1 with A008794(n+2) values in row n.

%C These are the values A172002(2*n)-A172002(2*n-1) arranged in a table by adding line breaks.

%C The last (and largest) numbers in the lines are in A056220(floor(n+1)/2).

%e 1;

%e 1;

%e 1, 3, 5, 7;

%e 1, 3, 5, 7;

%e 1, 3, 5, 7, 9, 11, 13, 15, 17;

%e 1, 3, 5, 7, 9, 11, 13, 15, 17;

%e 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31;

%e 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31;

%e 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43,...

%Y Cf. A158405.

%K nonn,easy,tabf

%O 1,4

%A _Paul Curtz_, Jan 24 2010

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 June 19 06:47 EDT 2019. Contains 324218 sequences. (Running on oeis4.)