Is there a closed form for determinant of the Hankel matrix of the sequence $\{ 1, a, a^2, \dots, a^{2n+2} \}$?
2026-02-23 23:34:57.1771889697
Determinant of a Hankel matrix
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If I interpret your question correctly, then I suggest that you multiply the first row by $a$ and subtract it from the second row. The determinant of the resulting matrix should be easy to calculate.