Fifth convolution of Lucas numbers A000032(n+1), n >= 0.

Terms

a(0) =1a(1) =18a(2) =159a(3) =942a(4) =4311a(5) =16536a(6) =55898a(7) =171924a(8) =491487a(9) =1325546a(10) =3409347a(11) =8430246a(12) =20164223a(13) =46880424a(14) =106350942a(15) =236147828a(16) =514553154a(17) =1102562952a(18) =2327442276a(19) =4847463408a(20) =9974081130a(21) =20297335340