Administrators, writer
2,824
edits
Changes
Manuals/calci/Pascal Triangle Fun (view source)
Revision as of 16:05, 7 August 2020
, 16:05, 7 August 2020→Pretty Pascal Triangle
</pre>
</pre>
==Pascal Triangle and Figurate Numbers==
PASCALTRIANGLE(20)
[https://en.wikipedia.org/wiki/Figurate_number]
figuratenumbers=(n,r)=>(n+r-1)!C!r;
a=[1..10,0..10]@figuratenumbers;
a.parts(10)
==Lucas, Fibonacci, Golden Ratio Relationship ==
==Lucas, Fibonacci, Golden Ratio Relationship ==
</pre>
</pre>
===Pretty Pascal Triangle===
<pre>
m=10;
pt=PASCALTRIANGLE(m)
pt
.map(
function (r,i)
{
var prefix= (REPEATCHAR(" ",(2*m-(2*i+1))/2).split(""));
return(
prefix
.concat(r.join(", ,").split(","))
.concat(prefix)
)
}
);
<pre>
Now we can use:
<pre>
PASCALTRIANGLE(10,true)
<pre>