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 A032563 Numbers n such that A102489(n) is divisible by n. 28
 1, 2, 3, 4, 5, 6, 7, 8, 9, 1038, 1040, 2078, 2080, 2118, 2120, 3158, 3160, 3200, 4198, 4238, 4240, 5278, 5280, 5318, 5320, 6358, 6360, 6400, 7398, 7438, 7440, 8478, 8480, 8518, 8520, 9558, 9560, 9600, 12480, 25440, 38400, 112308, 449440 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..71 EXAMPLE ...; 9{10} / 9{16} = 9 / 9 = 1; 4152{10} / 1038{16} = 4152 / 1038 = 4; 4160{10} / 1040{16} = 4160 / 1040 = 4; 8312{10} / 2078{16} = 8312 / 2078 = 4; ... MAPLE d:= Vector(10^7, 1): for i from 1 to 7 do    inds:= 10^i*[\$1..10^(7-i)];    d[inds]:= (2*16^i+3)/5; od: b:= Vector(10^7): b[1]:= 1: for i from 2 to 10^7 do   b[i]:= b[i-1]+d[i] od: select(t-> (b[t]/ t)::integer, [\$1..10^7]); # Robert Israel, Aug 30 2015 MATHEMATICA Select[Range[16^5], IntegerQ[FromDigits[IntegerDigits[#], 16]/#] &] (* Michael De Vlieger, Aug 29 2015 *) CROSSREFS Cf. A032564, A102489. Sequence in context: A181720 A004904 A122624 * A223081 A077727 A032557 Adjacent sequences:  A032560 A032561 A032562 * A032564 A032565 A032566 KEYWORD nonn,base AUTHOR Patrick De Geest, Apr 1998 STATUS approved

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Last modified August 20 14:36 EDT 2019. Contains 326152 sequences. (Running on oeis4.)