Multiples of 25.

Terms

a(0) =0a(1) =25a(2) =50a(3) =75a(4) =100a(5) =125a(6) =150a(7) =175a(8) =200a(9) =225a(10) =250a(11) =275a(12) =300a(13) =325a(14) =350a(15) =375a(16) =400a(17) =425a(18) =450a(19) =475a(20) =500a(21) =525a(22) =550a(23) =575a(24) =600a(25) =625a(26) =650a(27) =675a(28) =700a(29) =725