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Table of n, a(n) for n=1..40.
29^2 = a(9) = 841 = 625 + 216 = 25^2 + 6^3.
Cf. A055394, A066648.
Sequence in context: A027602 A231670 A134537 * A187607 A231674 A085037
Adjacent sequences: A066644 A066645 A066646 * A066648 A066649 A066650
Reinhard Zumkeller, Dec 17 2001