Lesser of consecutive primes whose sum is of the form k*(k+2), for some integer k.

Terms

a(0) =3a(1) =11a(2) =59a(3) =139a(4) =179a(5) =311a(6) =419a(7) =541a(8) =919a(9) =1399a(10) =1621a(11) =2111a(12) =3119a(13) =5099a(14) =6379a(15) =8059a(16) =8839a(17) =9377a(18) =15661a(19) =16007a(20) =16741a(21) =17107a(22) =21011a(23) =21839a(24) =23539a(25) =24419a(26) =28081a(27) =30011a(28) =31489a(29) =33533