Primes of the form p^4+q^4+r^4-4 with p<=q<=r all prime.

Terms

a(0) =109a(1) =239a(2) =653a(3) =1327a(4) =1871a(5) =14669a(6) =15887a(7) =31039a(8) =31583a(9) =33359a(10) =45599a(11) =57839a(12) =84223a(13) =85999a(14) =100559a(15) =112799a(16) =114479a(17) =126719a(18) =130349a(19) =131023a(20) =135119a(21) =140639a(22) =158959a(23) =159503a(24) =167119a(25) =167663a(26) =195599a(27) =213919a(28) =214463a(29) =228479