A051057 Record subsequence of b(3k+1), b()=A048142().
0, 0, 0, 0, 1, 1, 2, 3, 6, 9, 16, 23, 36, 52, 78, 111, 163, 227, 322, 444, 618, 841, 1151, 1550, 2094, 2793, 3730, 4931, 6522, 8555, 11216, 14608
Offset: 0
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