OEIS A000077: Representations by x^2 + 6y^2

We explore OEIS A000077, the sequence counting how many integers up to 2^n can be written as x^2 + 6y^2. We'll look at a concrete example, examine the first terms, and see how a simple quadratic form connects to broader ideas in number theory—quadratic forms, Landau-type results, and the way OEIS groups related sequences into families. A peek at the PRI code snippet showing how to generate more terms.

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