Pascal-(1,4,1) array.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =16a(12) =46a(13) =16a(14) =1a(15) =1a(16) =21a(17) =106a(18) =106a(19) =21a(20) =1a(21) =1a(22) =26a(23) =191a(24) =396a(25) =191a(26) =26a(27) =1a(28) =1a(29) =31