Pentagonal numbers divisible by 5.

Terms

a(0) =0a(1) =5a(2) =35a(3) =70a(4) =145a(5) =210a(6) =330a(7) =425a(8) =590a(9) =715a(10) =925a(11) =1080a(12) =1335a(13) =1520a(14) =1820a(15) =2035a(16) =2380a(17) =2625a(18) =3015a(19) =3290a(20) =3725a(21) =4030a(22) =4510a(23) =4845a(24) =5370a(25) =5735a(26) =6305a(27) =6700a(28) =7315a(29) =7740