If a sequence is typed in (use the pull down menue for 'a-sequence'), it should be a string of integers, enclosed by brackets [ ] and separated by commas (insensitive to blanks, no comma at the end), representing a tabl or tabf sequence.
This application would not exist without advice and help from Bernd Feucht,
Gerrit Jahn, Christian Kaufhold, Andreas Maier, Richard Mathar, Christoph Mayer, and
especially, from Drs. Thomas Hahn and Peter Marquard. Thanks go also to Dr. N. J. A. Sloane who suggested to allow as input also OEIS A-numbers as well as row length sequences in the tabf case.
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