login
A027204
a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026714.
1
1, 14, 114, 846, 5217, 33058, 185624, 1101526, 5929477, 34039034, 179226693, 1009890836, 5250600651, 29257284226, 150953226411, 835291570006, 4288969189506, 23626483356528, 120937293900189, 664239986729098, 3393075842573290
OFFSET
3,2
MAPLE
A027204 := proc(n)
add( A026714(n, k)*A026714(n, k+3), k=0..n-3) ;
end proc:
seq(A027204(n), n=3..30) ; # R. J. Mathar, Oct 21 2019
CROSSREFS
Sequence in context: A199196 A071573 A076429 * A200037 A026959 A026989
KEYWORD
nonn
EXTENSIONS
Name corrected by Sean A. Irvine, Oct 21 2019
More terms from Ray Chandler, Oct 22 2019
STATUS
approved