Primitive antiharmonic numbers.

Terms

a(0) =1a(1) =20a(2) =50a(3) =117a(4) =200a(5) =242a(6) =325a(7) =500a(8) =578a(9) =605a(10) =650a(11) =800a(12) =968a(13) =1025a(14) =1058a(15) =1280a(16) =1445a(17) =1476a(18) =1682a(19) =1700a(20) =2312a(21) =2340a(22) =2600a(23) =2645a(24) =3200a(25) =3362a(26) =3757a(27) =3872a(28) =4205a(29) =4232