A054105 T(n,3), array T as in A054098.
4, 11, 36, 148, 758, 4640, 33018, 267716, 2436218, 24587064, 272556602, 3292267868, 43042354506, 605561401328, 9122604404714, 146517362114292, 2499223145799098
Offset: 3
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