Number of right triangles on an (n+1) X 5 grid.

Terms

a(0) =46a(1) =158a(2) =342a(3) =596a(4) =926a(5) =1308a(6) =1754a(7) =2250a(8) =2794a(9) =3390a(10) =4026a(11) =4702a(12) =5426a(13) =6190a(14) =6994a(15) =7838a(16) =8726a(17) =9654a(18) =10622a(19) =11630a(20) =12678a(21) =13766a(22) =14894a(23) =16062a(24) =17270a(25) =18518a(26) =19806a(27) =21134a(28) =22502a(29) =23910