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A026574
T(2n,n), T given by A026568.
0
1, 1, 7, 19, 103, 341, 1809, 6336, 33899, 121483, 656199, 2381512, 12957809, 47419503, 259395664, 954961034, 5245001951, 19397198595, 106871608053
OFFSET
0,3
CROSSREFS
Sequence in context: A088883 A262186 A346513 * A351858 A240150 A091149
KEYWORD
nonn
STATUS
approved