a(n) = (3 * a(n-3) + a(n-1) * a(n-5)) / a(n-6), a(0) = a(1) = ... = a(5) = 1.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =4a(7) =7a(8) =10a(9) =22a(10) =43a(11) =202a(12) =370a(13) =547a(14) =1264a(15) =2521a(16) =11881a(17) =21781a(18) =32221a(19) =74521a(20) =148681a(21) =700744a(22) =1284667a(23) =1900450a(24) =4395442a(25) =8769643a(26) =41331982a(27) =75773530a(28) =112094287a(29) =259256524