Search: id:A006378
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%I A006378 M2427
%S A006378 3,5,7,31,53,97,211,233,277,367,389,457,479,547,569,613,659,727,839,
%T A006378 883,929,1021,1087,1109,1223,1289,1447,1559,1627,1693,1783,1873,2099,
%U A006378 2213,2347,2437,2459,2503,2549,2593,2617,2683,2729,2819,2953,3023,3067
%N A006378 Prime self (or Colombian) numbers: primes not expressible as the sum 
               of an integer and its digit sum.
%C A006378 A107740(a(n)) = 0.
%D A006378 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A006378 M. Gardner, Time Travel and Other Mathematical Bewilderments. Freeman, 
               NY, 1988, p. 116.
%D A006378 D. R. Kaprekar, Puzzles of the Self-Numbers. 311 Devlali Camp, Devlali, 
               India, 1959.
%D A006378 D. R. Kaprekar, The Mathematics of the New Self Numbers (Part V). 311 
               Devlali Camp, Devlali, India, 1967.
%D A006378 B. Recaman, Problem E2408, Amer. Math. Monthly, 81 (1974), p. 407.
%D A006378 J. O. Shallit, personal communication.
%Y A006378 Cf. A003052, A007953, A047791, A048521.
%Y A006378 Cf. A062028.
%Y A006378 Sequence in context: A106920 A060273 A124077 this_sequence A162714 A002396 
               A029508
%Y A006378 Adjacent sequences: A006375 A006376 A006377 this_sequence A006379 A006380 
               A006381
%K A006378 nonn,base,nice,easy
%O A006378 1,1
%A A006378 N. J. A. Sloane (njas(AT)research.att.com).

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