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Search: a211400 -id:a211400
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A255489
Row 3 of array in A211400.
+20
1
1, 5, 36, 295, 2583, 23580, 221680
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 2 gives the Catalan numbers, which automatically makes row 3 interesting.
LINKS
Table of n, a(n) for n=1..7.
CROSSREFS
Cf. A000108, A211400.
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 01 2015
STATUS
approved
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