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 A318466 a(n) = 2*n OR A000203(n), where OR is bitwise-or (A003986) and A000203 = sum of divisors. 11
 3, 7, 6, 15, 14, 12, 14, 31, 31, 22, 30, 28, 30, 28, 30, 63, 50, 39, 54, 42, 42, 44, 62, 60, 63, 62, 62, 56, 62, 124, 62, 127, 114, 118, 118, 91, 110, 124, 126, 90, 122, 116, 126, 92, 94, 92, 126, 124, 123, 125, 110, 106, 126, 124, 110, 120, 114, 126, 126, 248, 126, 124, 126, 255, 214, 148, 198, 254, 234, 156, 206 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Antti Karttunen, Table of n, a(n) for n = 1..65537 FORMULA a(n) = A003986(2*n, A000203(n)). a(n) = A224880(n) - A318468(n). MATHEMATICA Array[BitOr[2 #, DivisorSigma[1, #]] &, 71] (* Michael De Vlieger, Mar 30 2019 *) PROG (PARI) A318466(n) = bitor(2*n, sigma(n)); CROSSREFS Cf. A000203, A003986, A224880, A318467, A318468. Cf. also A318456. Sequence in context: A109635 A095360 A175142 * A324819 A217112 A241016 Adjacent sequences:  A318463 A318464 A318465 * A318467 A318468 A318469 KEYWORD nonn,base AUTHOR Antti Karttunen, Aug 26 2018 STATUS approved

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Last modified December 8 04:31 EST 2019. Contains 329850 sequences. (Running on oeis4.)