Number of 3-regular bipartitions of n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =8a(4) =16a(5) =26a(6) =44a(7) =68a(8) =108a(9) =162a(10) =245a(11) =356a(12) =521a(13) =740a(14) =1053a(15) =1468a(16) =2045a(17) =2804a(18) =3836a(19) =5184a(20) =6988a(21) =9326a(22) =12409a(23) =16376a(24) =21546a(25) =28154a(26) =36674a(27) =47492a(28) =61317a(29) =78764