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A000975 a(2n) = 2*a(2n-1), a(2n+1) = 2*a(2n)+1 (also n-th number without consecutive equal binary digits). +0
78
0, 1, 2, 5, 10, 21, 42, 85, 170, 341, 682, 1365, 2730, 5461, 10922, 21845, 43690, 87381, 174762, 349525, 699050, 1398101, 2796202, 5592405, 11184810, 22369621, 44739242, 89478485, 178956970, 357913941, 715827882, 1431655765, 2863311530 (list; graph; listen)
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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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