Pentagonal numbers (A000326) whose digit reversal is a prime.

Terms

a(0) =5a(1) =35a(2) =70a(3) =92a(4) =145a(5) =376a(6) =1520a(7) =1820a(8) =3577a(9) =3725a(10) =7526a(11) =9322a(12) =9560a(13) =10045a(14) =10292a(15) =13490a(16) =14065a(17) =16801a(18) =17767a(19) =18760a(20) =32782a(21) =34126a(22) =34580a(23) =36895a(24) =38320a(25) =38801a(26) =39772a(27) =73151a(28) =74482a(29) =76501