a(n) = n*nextprime(n).

Terms

a(0) =0a(1) =2a(2) =6a(3) =15a(4) =20a(5) =35a(6) =42a(7) =77a(8) =88a(9) =99a(10) =110a(11) =143a(12) =156a(13) =221a(14) =238a(15) =255a(16) =272a(17) =323a(18) =342a(19) =437a(20) =460a(21) =483a(22) =506a(23) =667a(24) =696a(25) =725a(26) =754a(27) =783a(28) =812a(29) =899