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A006191 Number of paths on square lattice.
(Formerly M1490)
0
1, 2, 5, 16, 54, 180, 595, 1964 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

REFERENCES

H. L. Abbott and D. Hanson, A lattice path problem, Ars Combin., 6 (1978), 163-178.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Table of n, a(n) for n=3..10.

CROSSREFS

Sequence in context: A100442 A081126 A018191 * A149959 A161941 A120899

Adjacent sequences:  A006188 A006189 A006190 * A006192 A006193 A006194

KEYWORD

nonn,walk

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 28 03:16 EDT 2015. Contains 261112 sequences.