Number of right triangles on a (n+1)X9 grid.

Terms

a(0) =158a(1) =550a(2) =1236a(3) =2250a(4) =3596a(5) =5250a(6) =7224a(7) =9496a(8) =12044a(9) =14860a(10) =17948a(11) =21266a(12) =24852a(13) =28634a(14) =32604a(15) =36780a(16) =41168a(17) =45716a(18) =50440a(19) =55324a(20) =60384a(21) =65612a(22) =71000a(23) =76532a(24) =82240a(25) =88116a(26) =94136a(27) =100300a(28) =106624a(29) =113100