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A227661
Number of lattice paths from {7}^n to {0}^n using steps that decrement one component by 1 such that for each point (p_1,p_2,...,p_n) we have abs(p_{i}-p_{i+1}) <= 1.
1
1, 1, 128, 896328, 69221669104, 31283451053916800, 57403822541579269311072, 337320253484345016223956919936, 5366698074745901061777599023075846976, 203989890816333447880297347963799273322740544, 16812841813975825541536765059695075768059296587720768
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..10.
EXAMPLE
a(2) = 2^7 = 128.
CROSSREFS
Row n=7 of
A227655
.
Cf.
A000079
.
Sequence in context:
A069446
A227605
A016879
*
A016939
A346008
A017011
Adjacent sequences:
A227658
A227659
A227660
*
A227662
A227663
A227664
KEYWORD
nonn
AUTHOR
Alois P. Heinz
, Jul 19 2013
STATUS
approved
