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A155870 a(1)=1, if a(n-1) has m digits, a(n) has m mod 9 number of "m mod 9" followed by "m mod 9" zeros if a(n) is not equal to some a(x), x<n; otherwise a(n)=prescribed a(n) + n; 0
1, 10, 2200, 44440000, 8888888800000000, 77777770000000, 5555500000, 18, 2209, 44440010, 8888888800000011, 77777770000012, 5555500013, 24, 2215, 44440016, 8888888800000017, 77777770000018, 5555500019, 30 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Prescribed a(n) is defined as, "if a(n-1) has m digits, a(n) has m mod 9 number of "m mod 9" followed by "m mod 9" zeros"
LINKS
EXAMPLE
a(3)=2200, number with 4 digits, thus a(4)=44440000. Similarly, a(8) was prescribed to be 10. But, since prescribed a(8)=a(2); a(8)=prescribed a(8)+8=18
CROSSREFS
Sequence in context: A114776 A249850 A334007 * A369811 A167775 A359148
KEYWORD
nonn,base
AUTHOR
Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 29 2009
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)