Repeatedly multiply (1,0,0) by ([1,2,2],[2,1,2],[2,2,3]); sequence gives leading entry.
1, 1, 9, 49, 289, 1681, 9801, 57121, 332929, 1940449, 11309769, 65918161
3 seqfan posts
Sat Nov 21 03:13:14 CET 2009 [seqfan] A090390 figured out (floretions)
Fri Nov 20 22:19:27 CET 2009 [seqfan] Independent confirmation of floretion iteration for A113249, and (almost) A090390
Thu Nov 19 17:19:12 CET 2009 [seqfan] detective work related to Creighton Dement's "Floretions"
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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