Pascal-(1,5,1) array.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =7a(5) =1a(6) =1a(7) =13a(8) =13a(9) =1a(10) =1a(11) =19a(12) =61a(13) =19a(14) =1a(15) =1a(16) =25a(17) =145a(18) =145a(19) =25a(20) =1a(21) =1a(22) =31a(23) =265a(24) =595a(25) =265a(26) =31a(27) =1a(28) =1a(29) =37