Number of partitions of n with unique smallest part and unique largest part.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =4a(6) =5a(7) =7a(8) =9a(9) =12a(10) =15a(11) =21a(12) =25a(13) =34a(14) =42a(15) =55a(16) =67a(17) =88a(18) =106a(19) =137a(20) =166a(21) =210a(22) =254a(23) =320a(24) =384a(25) =478a(26) =575a(27) =708a(28) =848a(29) =1039