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A267216
Numbers D such that D^2 = A^2 + B^3 + C^4 has more than two solutions in positive integers (A, B, C).
1
9, 21, 28, 33, 45, 47, 51, 53, 55, 61, 65, 66, 68, 69, 70, 73, 75, 77, 81, 82, 84, 87, 89, 91, 93, 95, 97, 103, 105, 107, 108, 109, 110, 111, 113, 114, 116, 117, 119, 123, 128, 129, 131, 133, 135, 136, 139, 142, 143, 145, 147, 149, 150, 152, 154, 156, 157, 161
OFFSET
1,1
COMMENTS
Subsequence of A256604.
EXAMPLE
9^2 = 1^2 + 4^3 + 2^4 = 4^2 + 4^3 + 1^4 = 8^2 + 1^3 + 2^4.
21^2 = 11^2 + 4^3 + 4^4 = 12^2 + 6^3 + 3^4 = 19^2 + 4^3 + 2^4.
CROSSREFS
Cf. A256604.
Sequence in context: A036316 A340122 A339728 * A039289 A045252 A139538
KEYWORD
nonn
AUTHOR
Chai Wah Wu, Feb 01 2016
STATUS
approved