Across: A: A square number.
D: The subtraction of the addition of B down and digit sum of H across from A across.
F: A prime number.
H: A cubic number.
J: The subtraction of F across from A down.

Down: A: D across mulitplied by C down.
B: A cubic number.
C: A square number.
E: A prime number.
G: A palindrome.
I: The subtraction of C down from the addition of H across and E down.
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