Restricted partitions.

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =12a(7) =22a(8) =39a(9) =70a(10) =126a(11) =225a(12) =404a(13) =725a(14) =1299a(15) =2331a(16) =4182a(17) =7501a(18) =13458a(19) =24145a(20) =43316a(21) =77715a(22) =139430a(23) =250152a(24) =448808a(25) =805222a(26) =1444677a(27) =2591958a(28) =4650342a(29) =8343380