Number of compositions of n, where the difference between the number of odd parts and the number of even parts is 2.

A242500

Number of compositions of n, where the difference between the number of odd parts and the number of even parts is 2.

Terms

    a(0) =1a(1) =0a(2) =2a(3) =4a(4) =3a(5) =16a(6) =19a(7) =40a(8) =95a(9) =136a(10) =321a(11) =588a(12) =1057a(13) =2240a(14) =3998a(15) =7848a(16) =15339a(17) =28464a(18) =56143a(19) =106788a(20) =204083a(21) =396704a(22) =755052a(23) =1457456a(24) =2806531a(25) =5377112a(26) =10382243a(27) =19947252a(28) =38382957a(29) =73996576

External references