Here is a puzzle to play with.
The sequence is this:
1,3,7,8,21,49,76,224,467,514,1155,2683,5216,10544,26867,51510,95823,
198669,357535,863317,1811764,3007503,5598802,
14428676,33185509,54538862,111949941,227634408,400708894,1033162084
Find the Sequence Rule

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