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A027255
Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026703.
0
1, 12, 97, 618, 3841, 21050, 119447, 615402, 3346316, 16708316, 88765368, 435341688, 2280888072, 11063821616, 57457039508, 276725405106, 1428712334412, 6848186443752, 35215486379288, 168242713587526, 862738339740944, 4112242003155592, 21045362383845012, 100147569980681634
OFFSET
3,2
CROSSREFS
Sequence in context: A219139 A059375 A251430 * A121791 A016753 A078605
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 26 2019
STATUS
approved