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 A233388 Odious numbers that are the sum of 2 consecutive odious numbers. 3
 11, 19, 35, 47, 59, 67, 79, 91, 107, 115, 131, 143, 155, 171, 179, 191, 203, 211, 227, 239, 251, 259, 271, 283, 299, 307, 319, 331, 339, 355, 367, 379, 395, 403, 419, 431, 443, 451, 463, 475, 491, 499, 515, 527, 539, 555, 563, 575, 587, 595 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Composites in this sequence: 35, 91, 115, 143, 155, 171, 203, 259, 299, 319, 229, 366, 395, 403, 451, 475, 515, 527, 539, 555, 575, 595,... (a(n + 1) - a(n))/4 are 2, 4, 3, 3, 2, 3, 3, 4, 2, 4, 3, 3, 4, 2, 3, 3, 2, 4, 3, 3, 2, 3, 3, 4, 2, 3, 3, 2, 4, 3, 3, 4, 2, 4, 3, 3, 2, 3,... LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 EXAMPLE 11 is in this sequence because 11 = A000069(6) and 11 = 4 + 7 where 4 = A000069(3) and 7 = A000069(4). 19 is in this sequence because 19 = A000069(10) and 19 = 8 + 11 where 8 = A000069(5) and 11 = A000069(6). MATHEMATICA odQ[n_] := OddQ @ DigitCount[n, 2, 1]; Select[Plus @@@ Partition[Select[Range[300] , odQ], 2, 1], odQ] (* Amiram Eldar, Aug 29 2020 *) CROSSREFS Cf. A000069, A227930, A131323, A234431. Sequence in context: A178150 A214784 A205798 * A248398 A052368 A226542 Adjacent sequences: A233385 A233386 A233387 * A233389 A233390 A233391 KEYWORD nonn,easy AUTHOR Gerasimov Sergey, Dec 08 2013 STATUS approved

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Last modified August 13 14:39 EDT 2024. Contains 375142 sequences. (Running on oeis4.)