Number of partitions of n such that the least part occurs at least twice.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =3a(5) =7a(6) =8a(7) =14a(8) =18a(9) =28a(10) =35a(11) =53a(12) =67a(13) =94a(14) =121a(15) =165a(16) =209a(17) =280a(18) =353a(19) =462a(20) =582a(21) =749a(22) =935a(23) =1192a(24) =1480a(25) =1862a(26) =2302a(27) =2871a(28) =3526a(29) =4366