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Search: id:A153358
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| A153358 |
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Run length decoding of pi. |
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+0
1
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| 141, 92653, 89793, 38, 6264, 383, 79, 2884, 9, 1693993, 5105820, 749445923, 164062862089986280348253421170679821480865132823066470938446095505822317253594, 28481117450284102701938521105559644622948954930381964428810975665933446128475648\ 2
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The first digit of pi is 3, indicating a(1) consists of the next 3 digits: 141. The next digit of pi is 5, indicating a(2) consists of the next 5 digits: 92653, etc.
If the run digit is a sequence of N zeros, then the run length is the next N+1 digits following the zeros. For example, after a(12) the next digit is a zero. The run length is the next two digits, 78, so a(13) is a 78-digit number: 164062862089986280348253421170679821480865132823066470938446095505822317253594.
a(222) is the first 3-digit run at 971-digits.
a(318) is the first 4-digit run at 4,229-digits.
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EXAMPLE
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(3)141,(5)92653,(5)89793,(2)38,(4)6264,(3)383,(2)79,(5)02884, etc.
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CROSSREFS
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Sequence in context: A005849 A066623 A164525 this_sequence A066627 A087001 A025379
Adjacent sequences: A153355 A153356 A153357 this_sequence A153359 A153360 A153361
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KEYWORD
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nonn
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AUTHOR
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Gil Broussard (gilbroussard(AT)bellsouth.net), Dec 24 2008
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