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Search: id:A003052
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| A003052 |
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Self or Colombian numbers (not of form n + sum of digits of n).
(Formerly M2404)
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+0
11
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| 1, 3, 5, 7, 9, 20, 31, 42, 53, 64, 75, 86, 97, 108, 110, 121, 132, 143, 154, 165, 176, 187, 198, 209, 211, 222, 233, 244, 255, 266, 277, 288, 299, 310, 312, 323, 334, 345, 356, 367, 378, 389, 400, 411, 413, 424, 435, 446, 457, 468, 479, 490, 501, 512, 514, 525
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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M. Gardner, Time Travel and Other Mathematical Bewilderments. Freeman, NY, 1988, p. 116.
D. R. Kaprekar, Puzzles of the Self-Numbers. 311 Devlali Camp, Devlali, India, 1959.
D. R. Kaprekar, The Mathematics of the New Self Numbers (Part V). 311 Devlali Camp, Devlali, India, 1967.
B. Recaman, Problem E2408, Amer. Math. Monthly, 81 (1974), p. 407.
J. Recreational Math., vol. 23, no. 1, p. 244, 1991.
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LINKS
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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
W. Schneider, Self Numbers
Wikipedia, Self number
T. Trotter, Charlene Numbers
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CROSSREFS
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Cf. A006378, A006886.
For self primes, i.e. self numbers which are primes, see A006378.
Adjacent sequences: A003049 A003050 A003051 this_sequence A003053 A003054 A003055
Sequence in context: A114136 A025072 A083107 this_sequence A003219 A030142 A076185
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KEYWORD
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nonn,base
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jul 06 2000
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