A267216 Numbers D such that D^2 = A^2 + B^3 + C^4 has more than two solutions in positive integers (A, B, C).

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.

Links

Chai Wah Wu, Table of n, a(n) for n = 1..10000

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

Adjacent sequences: A267213 A267214 A267215 * A267217 A267218 A267219

Keyword

nonn

Author

Chai Wah Wu, Feb 01 2016

Status

approved