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A141835
a(n) = Sum of terms in A062901 which are below 10^n.
The elements of A062901 less than 1000 are 0, 7, 70, 77, 161, 168, 252, 259, 343, 434, 525, 595, 616, 686, 700, 707, 770, 777, 861, 868, 952 and 959. Their sum is a(3) = 10787.