Self-convolution of natural numbers >= 3.

Terms

a(0) =9a(1) =24a(2) =46a(3) =76a(4) =115a(5) =164a(6) =224a(7) =296a(8) =381a(9) =480a(10) =594a(11) =724a(12) =871a(13) =1036a(14) =1220a(15) =1424a(16) =1649a(17) =1896a(18) =2166a(19) =2460a(20) =2779a(21) =3124a(22) =3496a(23) =3896a(24) =4325a(25) =4784a(26) =5274a(27) =5796a(28) =6351a(29) =6940