What is the next number in the series - 9; 86; 856; 8556; ??

Question

What is the next number in the sequence -
1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, 103, 109, 129, 130, ?

Answer 1

85556

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n*10-4 is the pattern, n is a previous number
9;
9*10-4=86;
86*10-4=856;
856*10-4=8556;
8556*10-4=85556