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Sometimes called Munchhausen numbers. Cf. A166623.
J. S. Madachy, "Madachy's Mathematical Recreations", Dover N.Y., pp. 163-175.
C. A. Pickover, "Keys to Infinity", Wiley 1995, Ch. 22, pp. 169-171.
David Wells, "Curious and Interesting Numbers", Penguin 1988, pp. 169, 190.
Table of n, a(n) for n=1..4.
Eric Weisstein's World of Mathematics, Münchhausen Number.
3435 = 3^3 + 4^4 + 3^3 + 5^5.
Cf. A032799, A166623.
Sequence in context: A172881 A172913 A172708 * A031824 A107537 A202644
Adjacent sequences: A046250 A046251 A046252 * A046254 A046255 A046256
Patrick De Geest, May 15, 1998.