1,2

4 is OK because 3^4 + 4^3 = 81 + 64 = 145 = 5*29 (semiprime).

Sequence in context: A114997 A138634 A125495 this_sequence A036312 A024805 A008579

Adjacent sequences: A114968 A114969 A114970 this_sequence A114972 A114973 A114974

nonn

Zak Seidov (zakseidov(AT)yahoo.com), Feb 22 2006