Convolution of A023532 and composite numbers.

Terms

a(0) =4a(1) =6a(2) =12a(3) =19a(4) =24a(5) =33a(6) =43a(7) =55a(8) =65a(9) =78a(10) =92a(11) =109a(12) =128a(13) =143a(14) =160a(15) =181a(16) =204a(17) =226a(18) =250a(19) =272a(20) =298a(21) =325a(22) =353a(23) =382a(24) =414a(25) =446a(26) =475a(27) =509a(28) =543a(29) =580