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 A129199 Absolute differences of A129198. 4

%I

%S 1,3,2,8,4,16,19,43,5,53,6,102,185,377,7,391,759,1527,9,1545,3062,

%T 6134,10,6154,12277,24565,11,24587,12,49164,98291,196595,13,196621,

%U 393202,786418,14,786446,1572849,3145713,15,3145743,6291440,12582896,12582895

%N Absolute differences of A129198.

%C This sequence is known to be a permutation of positive integers, along with its parent sequence (A129198).

%C In the paper of Slater and Velez it is shown that both this sequence and its parent are permutations of positive integers.

%H P. J. Slater and W. Y. Velez, <a href="https://projecteuclid.org/euclid.pjm/1102811644">Permutations of the Positive Integers with Restrictions on the Sequence of Differences</a>, Pacific J. Math., 71, 1977.

%H William Y. Velez, <a href="https://doi.org/10.1016/0012-365X(92)90724-T">Research problems 159-160</a>, Discrete Math 110 (1992), pp. 301-302.

%Y This is the absolute difference of A129198, cf. A081145.

%K nonn

%O 1,2