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 A109028 8-almost primes (A046310) whose digit reversal is different and also has 8 prime factors (with multiplicity). "Emirp Tsolma-8.". 5
 16560, 25515, 27864, 42480, 46872, 51552, 57348, 61488, 65448, 67797, 69408, 69840, 79776, 80496, 84375, 84456, 88416, 105336, 119448, 125928, 160416, 167076, 202032, 204984, 206928, 210960, 211104, 211464, 213750, 213792, 213920, 213984 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence is the k = 8 instance of the series which begins with k = 1 (emirps), k = 2 (emirpimes), k = 3 (emirp tsolma-3 = A109023), k = 4 (emirp tsolma-4 = A109024), k = 5 (emirp tsolma-5 = A109025), k = 6 (emirp tsolma-6 = A109026), k = 7 (emirp tsolma-7 = A109027). The Mathematica code for this was written by Ray Chandler who extended this sequence. He also has more values. REFERENCES Jonathan Vos Post, "1066 and All That: Emirp Tsolma-3 and Related Integer Sequences." Forthcoming paper on this sequence. LINKS Eric Weisstein's World of Mathematics, Almost Prime. Eric Weisstein's World of Mathematics, Emirp. Eric Weisstein and Jonathan Vos Post, Emirpimes. EXAMPLE a(2) = 25515 is in this sequence because 25515 = 3^6 * 5 * 7 is an 8-almost prime and reverse(25515) = 51552 = 2^5 * 3^2 * 179 is also an 8-almost prime. CROSSREFS Cf. A046310, A006567, A097393, A109018, A109023-A109027, A109029-A109131. Sequence in context: A253963 A253759 A091089 * A193244 A240901 A234894 Adjacent sequences:  A109025 A109026 A109027 * A109029 A109030 A109031 KEYWORD nonn,base AUTHOR Jonathan Vos Post, Jun 16 2005 STATUS approved

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Last modified May 23 21:44 EDT 2022. Contains 353993 sequences. (Running on oeis4.)