Search: id:A158614 Results 1-1 of 1 results found. %I A158614 %S A158614 0,1,2,3,4,6,8,9,10,13,14,15,16,17,21,23,25,27,29,30,31,32,34,35,36,38, %T A158614 39,43,45,48,49,50,52,53,57,60,62,63,64,69,70,71,78,79,80,81,84,86,87, %U A158614 90,91,93,95,100,101,106,107,108,112,115,116,119,122,123,125,127,128 %N A158614 Numbers n such that 30*n + 11 is prime. %C A158614 Encoded primes with LSD 1 and (SOD-1)/3 non-integer, (LSD, least significant digit; SOD, sum of digits). Divide any such number by 30, if the whole number portion of the quotient is in the sequence, the number is prime. %F A158614 a(n) = (A132232(n) - 11)/30 = Floor[A132232(n)/30]. - Chandler %e A158614 Example: 3191, with LSD 1 and (SOD-1)/3 = 4.33 (non-integer); Then 3191/ 30=106.367, or 106 which is in the sequence, thus 3191 is prime. %Y A158614 Cf. A111175, A158573, A158648, A158746, A158791, A158806, A158850. %Y A158614 Sequence in context: A067023 A002183 A060306 this_sequence A117925 A135571 A138394 %Y A158614 Adjacent sequences: A158611 A158612 A158613 this_sequence A158615 A158616 A158617 %K A158614 nonn %O A158614 1,3 %A A158614 Ki Punches (ki1212(AT)pocketmail.com), Mar 22 2009, Mar 29 2009 %E A158614 Edited by Ray Chandler (rayjchandler(AT)sbcglobal.net), Apr 07 2009 Search completed in 0.001 seconds