Triangular T(n,k) = T(n-1, k) + T(n-1, k-1) + 5*T(n-2, k-1), read by rows.

Terms

a(0) =2a(1) =5a(2) =5a(3) =2a(4) =46a(5) =2a(6) =2a(7) =123a(8) =123a(9) =2a(10) =2a(11) =135a(12) =476a(13) =135a(14) =2a(15) =2a(16) =147a(17) =1226a(18) =1226a(19) =147a(20) =2a(21) =2a(22) =159a(23) =2048a(24) =4832a(25) =2048a(26) =159a(27) =2a(28) =2a(29) =171