**Y = X = 'i + .25(ii + jj + kk + e); Z = 'i - i' + .5(jj + kk - jk + kj) + e. See pdf-file and comment for an exact definition (this sequence gives an initial term 3); Version "les".**

*3, 2, 2, 9, 24, 33, 21, 2, 6, 18, 47, 30, 13, 20, 4, 7, 32, 42, 59, 80, 77*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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