Catalan numbers/Pascal's triangle: Difference between revisions
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{{out}}
<pre>1 2 5 14 42 132 429 1430 4862 16796 58786 208012 742900 2674440 9694845 </pre>
=={{header|Tcl}}==
<lang tcl>proc catalan n {
set result {}
array set t {0 0 1 1}
for {set i 1} {[set k $i] <= $n} {incr i} {
for {set j $i} {$j > 1} {} {incr t($j) $t([incr j -1])}
set t([incr k]) $t($i)
for {set j $k} {$j > 1} {} {incr t($j) $t([incr j -1])}
lappend result [expr {$t($k) - $t($i)}]
}
return $result
}
puts [catalan 15]</lang>
{{out}}
<pre>1 2 5 14 42 132 429 1430 4862 16796 58786 208012 742900 2674440 9694845</pre>
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