[seqfan] A090390 figured out (floretions)

[Robert Munafo]

I figured out the iteration formula for A090390. Its second %C field
is wrong: it is not a "tesseq(...)" iteration, but in fact is
"ibaseseq(...) + tesseq(...)". Stated more directly, instead of taking
just the "ee" component at each iteration, one needs to add the 'i and
ee components together. I have updated my web page and the source code
therein. Here is what I am getting now; this agrees in every term so
far as OEIS can tell us:

  Calculating A090390 :
  X = - .5'j + .5'k - .5j' + .5k' - 2'ii' + 'jj' - 'kk' + .5'ij' +
.5'ik' + .5'ji' + 'jk' + .5'ki' + 'kj' + 1
  ibasetesseq(X) == 1, 1, 9, 49, 289, 1681, 9801, 57121, 332929,
1940449, 11309769, 65918161, 384199201, 2239277041, 13051463049,
76069501249, 443365544449, 2584123765441, 15061377048201,
87784138523761, 511643454094369, ...

-- 
  Robert Munafo  --  mrob.com