Number of partitions of n objects of 2 colors with parts size >1.

Terms

a(0) =1a(1) =0a(2) =3a(3) =4a(4) =11a(5) =18a(6) =42a(7) =70a(8) =144a(9) =248a(10) =466a(11) =802a(12) =1442a(13) =2444a(14) =4247a(15) =7116a(16) =12030a(17) =19878a(18) =32938a(19) =53670a(20) =87429a(21) =140680a(22) =225815a(23) =359100a(24) =569157a(25) =895224a(26) =1402941a(27) =2184662a(28) =3388915a(29) =5228458