Semiprimes which are the sum of two pentagonal numbers (A000326) in exactly two different ways.

Terms

a(0) =215a(1) =381a(2) =447a(3) =766a(4) =807a(5) =1457a(6) =1622a(7) =1639a(8) =1927a(9) =2047a(10) =2245a(11) =2302a(12) =2497a(13) =3027a(14) =3173a(15) =3437a(16) =3715a(17) =3787a(18) =4359a(19) =4369a(20) =4577a(21) =4594a(22) =4677a(23) =4681a(24) =5029a(25) =5277a(26) =5377a(27) =5435a(28) =5617a(29) =5747