Position where n (presumably) appears the last time in A107261, or 0 if n keeps appearing.

Terms

a(0) =64a(1) =256a(2) =841a(3) =1021a(4) =533a(5) =1027a(6) =0a(7) =1231a(8) =3721a(9) =1937a(10) =8836a(11) =2421a(12) =9026a(13) =9608a(14) =0a(15) =0a(16) =20451a(17) =22209a(18) =22805a(19) =0a(20) =23723a(21) =22509a(22) =22505a(23) =0a(24) =24337a(25) =24347a(26) =24651a(27) =24967a(28) =25605a(29) =25927