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A027143
a(n) = Sum_{k=0..2n-3} T(n,k) * T(n,k+3), with T given by A027113.
0
57, 486, 4117, 34760, 293086, 2471917, 20870169, 176467252, 1494672812, 12682766442, 107814252502, 918166760699, 7832993240285, 66936986352534, 572934789920969, 4911478255448828, 42165255645650628, 362494201554529232, 3120475613849051712, 26895832224848130557
OFFSET
3,1
CROSSREFS
Cf. A027113.
Sequence in context: A337629 A218812 A290779 * A164786 A240416 A264240
KEYWORD
nonn
EXTENSIONS
More terms from Sean A. Irvine, Oct 23 2019
STATUS
approved