Nim product 15 * n.

Terms

a(0) =0a(1) =15a(2) =5a(3) =10a(4) =1a(5) =14a(6) =4a(7) =11a(8) =2a(9) =13a(10) =7a(11) =8a(12) =3a(13) =12a(14) =6a(15) =9a(16) =240a(17) =255a(18) =245a(19) =250a(20) =241a(21) =254a(22) =244a(23) =251a(24) =242a(25) =253a(26) =247a(27) =248a(28) =243a(29) =252