#来自在线整数序列百科全书的问候!http://oeis.org/搜索:id:a129609显示1/1%一号A129609%S A129609 0,1,3,2,7,6,8,4,5,17,18,14,15,16,20,19,21,9,10,22,11,12,13,45,46,48,%电话A129609 49,50,37,38,39,40,41,42,43,44,47,54,55,51,52,53,57,56,58,23,24,59,25,%U A129609 26,27,61,60,62,28,29,63,30,31,32,64,33,34,35,36129130132133134%N A129609加泰罗尼亚自同构的签名置换,A089840的第65167行。%C A129609自同构*A074679=ENIPS(*A129609)。参见A122204中给出的定义。%H A129609 A.卡图宁,n=20A中的n..0%H A129609 A.卡图宁,Prolog程序,说明了这种和类似的非递归Catalan自同构的构造。%沪A129609Catalan自同构签名置换的索引项%o A129609(此自同构的构造性和破坏性方案实现。这些作用于S表达式,即列表结构:)%o A129609(定义(*A129609 s)(条件((对)(*A074679(cons(car s)(*A074680(cdr)))))(其他s)))%o A129609(定义(*A129609!s)(条件((对)(*A074680!(cdr s))(*A074679!s)))%Y A129609反向:A129610。%K A129609无%O A129609 0,3%2007年5月22日,A A129609Antti Karttunen#根据OEIS最终用户许可协议提供内容:http://oeis.org/LICENSE