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 A249766 Numbers n = concat(s,t) such that s and t divide n. 3
 11, 12, 15, 22, 24, 33, 36, 44, 48, 55, 66, 77, 88, 99, 101, 102, 104, 105, 110, 120, 125, 150, 202, 204, 208, 210, 220, 240, 250, 303, 306, 312, 315, 330, 360, 375, 404, 408, 416, 420, 440, 480, 505, 510, 520, 525, 550, 606, 612, 624, 630, 660, 707, 714, 728 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subset of A038770 and A139138. LINKS Paolo P. Lava, Table of n, a(n) for n = 1..1000 EXAMPLE 306 = concat(3, 06) and 306 / 3 = 102 and 306 / 6 = 51. 76152 = concat(76, 152) and 76152 / 76 = 1002 and 76152 / 152 = 501. MAPLE with(numtheory):P:=proc(q) local a, b, k, n; for n from 1 to q do for k from 1 to ilog10(n) do a:=n mod 10^k; b:=trunc(n/10^k); if a*b>0 then if type(n/a, integer) and type(n/b, integer) then print(n); break; fi; fi; od; od; end: P(10^6); CROSSREFS Cf. A038770, A139138. Sequence in context: A189836 A292683 A139138 * A113600 A255725 A287442 Adjacent sequences:  A249763 A249764 A249765 * A249767 A249768 A249769 KEYWORD nonn,base AUTHOR Paolo P. Lava, Nov 05 2014 STATUS approved

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Last modified November 26 03:20 EST 2020. Contains 338632 sequences. (Running on oeis4.)