Index of first occurrence of n in A090290, or 0 if n does not occur in A090290.

Terms

a(0) =1a(1) =2a(2) =5a(3) =9a(4) =35a(5) =62a(6) =195a(7) =126a(8) =186a(9) =28a(10) =230a(11) =57a(12) =26a(13) =170a(14) =280a(15) =270a(16) =265a(17) =1008a(18) =56a(19) =398a(20) =473a(21) =376a(22) =32a(23) =581a(24) =3204a(25) =903a(26) =898a(27) =206a(28) =1581a(29) =2330