Heptagonal numbers divisible by 7.

Terms

a(0) =0a(1) =7a(2) =112a(3) =189a(4) =469a(5) =616a(6) =1071a(7) =1288a(8) =1918a(9) =2205a(10) =3010a(11) =3367a(12) =4347a(13) =4774a(14) =5929a(15) =6426a(16) =7756a(17) =8323a(18) =9828a(19) =10465a(20) =12145a(21) =12852a(22) =14707a(23) =15484a(24) =17514a(25) =18361a(26) =20566a(27) =21483a(28) =23863a(29) =24850