Maximal number of right triangles in n turns of Pythagoras's snail.

Terms

a(0) =16a(1) =53a(2) =109a(3) =185a(4) =280a(5) =395a(6) =531a(7) =685a(8) =860a(9) =1054a(10) =1268a(11) =1502a(12) =1756a(13) =2029a(14) =2322a(15) =2635a(16) =2967a(17) =3319a(18) =3691a(19) =4083a(20) =4494a(21) =4926a(22) =5376a(23) =5847a(24) =6337a(25) =6848a(26) =7377a(27) =7927a(28) =8496a(29) =9086