The partition function G(n,3).

Terms

a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =46a(6) =166a(7) =652a(8) =2780a(9) =12644a(10) =61136a(11) =312676a(12) =1680592a(13) =9467680a(14) =55704104a(15) =341185496a(16) =2170853456a(17) =14314313872a(18) =97620050080a(19) =687418278544