A054104 T(n,2), array T as in A054098.
2, 3, 8, 30, 134, 714, 4462, 32126, 262362, 2398738, 24287222, 269858022, 3265282066, 42745510682, 601999275438, 9076296768142, 145869055202282, 2489498542118946
Offset: 2
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