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A372400
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Position of 30^n among 5-smooth numbers A051037.
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2
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1, 18, 83, 228, 486, 888, 1466, 2255, 3283, 4583, 6189, 8134, 10445, 13158, 16305, 19916, 24027, 28667, 33870, 39665, 46086, 53166, 60937, 69429, 78675, 88709, 99561, 111263, 123849, 137347, 151793, 167219, 183658, 201139, 219695, 239359, 260165, 282141, 305320
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OFFSET
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0,2
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COMMENTS
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Also position of 30^(n+1) in A143207.
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LINKS
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MATHEMATICA
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Table[Sum[Floor@ Log[5, 30^n/(2^i*3^j)] + 1, {i, 0, Log[2, 30^n]}, {j, 0, Log[3, 30^n/2^i]}], {n, 0, 38}]
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PROG
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(Python) # uses imports/function in A372401
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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