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A047026
T(n,n+1), array T given by A047020.
0
1, 2, 5, 14, 47, 161, 558, 2020, 7398, 27239, 101807, 383210, 1447965, 5507227, 21038148, 80597585, 309861811, 1194651520, 4615681266, 17872627858, 69339129304, 269437315070, 1048578870090, 4086453815450, 15944711627177
OFFSET
0,2
CROSSREFS
Sequence in context: A149900 A149901 A149902 * A148338 A149903 A149904
KEYWORD
nonn
STATUS
approved