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C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.
Table of n, a(n) for n=1..59.
P. De Geest, PWP's Sorted By Length
Sequence in context: A105356 A082453 A033041 * A033039 A161957 A082720
Adjacent sequences: A077794 A077795 A077796 * A077798 A077799 A077800
Patrick De Geest, Nov 16 2002.