login
A129698
Arises in patience sorting and its generalizations.
0
1, 1, 2, 4, 9, 23, 66, 209, 718, 2645, 10373, 43090, 188803, 869191, 4189511
OFFSET
1,3
COMMENTS
Arises from a Neumann series, all of whose nonzero entries are positive integers. The sequence terms and the matrix from which they arise are given explicitly on pages 74-75 of Lankham's Ph.D. dissertation.
LINKS
Elizabeth Hartung, Hung Phuc Hoang, Torsten Mütze, Aaron Williams, Combinatorial generation via permutation languages. I. Fundamentals, arXiv:1906.06069 [cs.DM], 2019.
Isaiah Lankham, Patience Sorting and Its Generalizations, 31 May 2007, Ph.D. dissertation, 108 pages.
CROSSREFS
Sequence in context: A202552 A272301 A359032 * A261134 A117419 A124461
KEYWORD
nonn,more
AUTHOR
Jonathan Vos Post, Jun 01 2007
EXTENSIONS
Broken URL replaced by R. J. Mathar, Jul 10 2009
STATUS
approved