Number of partitions satisfying cn(1,5) + cn(4,5) <= 1.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =3a(5) =6a(6) =6a(7) =9a(8) =12a(9) =14a(10) =20a(11) =23a(12) =30a(13) =39a(14) =44a(15) =61a(16) =68a(17) =87a(18) =107a(19) =123a(20) =159a(21) =181a(22) =221a(23) =270a(24) =306a(25) =384a(26) =436a(27) =524a(28) =623a(29) =712