%I A139618
%S A139618 18,171,324,477,630,783,936,1089,1242,1395,1548,1701,1854,2007,2160,
%T A139618 2313,2466,2619,2772,2925,3078,3231,3384,3537,3690,3843,3996,4149,4302,
%U A139618 4455,4608,4761,4914,5067,5220,5373,5526,5679,5832,5985
%N A139618 18th transversal numbers (or 18-transversal numbers): (A000217(18)-18)*n 
               + 18.
%C A139618 Numbers of the 18th column of positive numbers in the square array of 
               nonnegative and polygonal numbers A139600. Also, numbers of the 18th 
               column in the square array A057145.
%F A139618 a(n) = (A000217(18)-18)*n + 18 = (171-18)n + 18 = 153n + 18 = 9(17n + 
               2).
%Y A139618 Cf. A001477, A000217, A000290, A000326, A000384, A000566, A000567, A001106, 
               A001107, A051682, A051624, A051865, A051866, A051867, A051868, A051869, 
               A051870, A000004, A000012, A000027, A008585, A016957, A017329, A139606, 
               A139607, A139608, A139609, A139610, A139611, A139612, A139613, A139614, 
               A139615, A139616, A139617, A139619, A139620, A057145, A086271, A139600, 
               A139601.
%Y A139618 Sequence in context: A071539 A125381 A126539 this_sequence A010970 A126920 
               A022583
%Y A139618 Adjacent sequences: A139615 A139616 A139617 this_sequence A139619 A139620 
               A139621
%K A139618 easy,nonn
%O A139618 0,1
%A A139618 Omar E. Pol (info(AT)polprimos.com), May 21 2008