The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A259532 Triangular array: row k shows the discriminant of sqrt(j) + sqrt(k) for j=1..k. 1

%I #32 Jul 20 2015 14:04:14

%S 1,8,8,12,8,12,1,2304,2304,1,5,8,12,8,5,24,1600,12,12,1600,24,28,2304,

%T 3600,1,3600,2304,28,8,12544,2304,5,5,2304,12544,8,1,8,7056,24,5,24,

%U 7056,8,1,40,8,2304,28,14400,14400,28,2304,8,40,44,1600,12,8

%N Triangular array: row k shows the discriminant of sqrt(j) + sqrt(k) for j=1..k.

%H Clark Kimberling, <a href="/A259532/b259532.txt">Table of n, a(n) for n = 1..1000</a>

%e First seven rows:

%e 1

%e 8 8

%e 12 8 12

%e 1 2304 2304 1

%e 5 8 12 8 5

%e 24 1600 12 12 1600 24

%e 28 2304 3600 1 3600 2304 28

%t t = Table[NumberFieldDiscriminant[Sqrt[j] + Sqrt[k + 1 - j]], {k, 1, 16}, {j, 1, k}]

%t TableForm[t] (* A259532 array *)

%t Flatten[t] (* A259532 sequence *)

%Y Cf. A259911, A259912, A259913.

%K nonn,easy,tabl

%O 1,2

%A _Clark Kimberling_, Jul 20 2015

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 16 16:46 EDT 2024. Contains 373432 sequences. (Running on oeis4.)