Self-convolution of (1, p(1), p(2), ...).

Terms

a(0) =1a(1) =4a(2) =10a(3) =22a(4) =43a(5) =80a(6) =137a(7) =222a(8) =343a(9) =508a(10) =737a(11) =1030a(12) =1411a(13) =1888a(14) =2477a(15) =3198a(16) =4059a(17) =5096a(18) =6297a(19) =7702a(20) =9327a(21) =11176a(22) =13301a(23) =15682a(24) =18355a(25) =21344a(26) =24673a(27) =28358a(28) =32411a(29) =36896