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 A318467 a(n) = 2*n XOR A000203(n), where XOR is bitwise-xor (A003987) and A000203 = sum of divisors. 6
 3, 7, 2, 15, 12, 0, 6, 31, 31, 6, 26, 4, 20, 4, 6, 63, 48, 3, 50, 2, 10, 8, 54, 12, 45, 30, 30, 0, 36, 116, 30, 127, 114, 114, 118, 19, 108, 112, 118, 10, 120, 52, 122, 12, 20, 20, 110, 28, 91, 57, 46, 10, 92, 20, 38, 8, 34, 46, 74, 208, 68, 28, 22, 255, 214, 20, 194, 246, 234, 28, 198, 83, 216, 230, 234, 20, 250, 52, 206, 26 (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) = A003987(2*n, A000203(n)). a(n) = A224880(n) - 2*A318468(n). PROG (PARI) A318467(n) = bitxor(2*n, sigma(n)); CROSSREFS Cf. A000203, A003987, A318466, A318468. Cf. A000396 (positions of zeros). Cf. also A294899, A318457. Sequence in context: A260421 A237427 A210203 * A324713 A245611 A063041 Adjacent sequences:  A318464 A318465 A318466 * A318468 A318469 A318470 KEYWORD nonn,base AUTHOR Antti Karttunen, Aug 26 2018 STATUS approved

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Last modified December 12 07:31 EST 2019. Contains 329948 sequences. (Running on oeis4.)