Fifth in an infinite set of generalized Pascal's triangles, with trigonometric properties.

Terms

a(0) =1a(1) =1a(2) =4a(3) =1a(4) =5a(5) =19a(6) =1a(7) =9a(8) =24a(9) =91a(10) =1a(11) =10a(12) =63a(13) =115a(14) =436a(15) =1a(16) =14a(17) =73a(18) =397a(19) =551a(20) =2089a(21) =1a(22) =15a(23) =132a(24) =470a(25) =2358a(26) =2640a(27) =10009a(28) =1a(29) =19