a(n) = binomial(5*n+7, 4)/5 for n >= 0.

Terms

a(0) =7a(1) =99a(2) =476a(3) =1463a(4) =3510a(5) =7192a(6) =13209a(7) =22386a(8) =35673a(9) =54145a(10) =79002a(11) =111569a(12) =153296a(13) =205758a(14) =270655a(15) =349812a(16) =445179a(17) =558831a(18) =692968a(19) =849915a(20) =1032122a(21) =1242164a(22) =1482741a(23) =1756678a(24) =2066925a(25) =2416557a(26) =2808774a(27) =3246901a(28) =3734388a(29) =4274810