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Search: id:A061852
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A061852 Digital representation of m contains only either 1's or 2's (but not both 1's and 2's) and 0's, is palindromic, and contains no singleton 2's, 1's or 0's. +0
2
11, 22, 111, 222, 1111, 2222, 11111, 22222, 110011, 111111, 220022, 222222, 1100011, 1111111, 2200022, 2222222, 11000011, 11100111, 11111111, 22000022, 22200222, 22222222, 110000011, 111000111, 111111111, 220000022, 222000222 (list; graph; listen)
OFFSET

0,1

FORMULA

a(n) =A008919(n)/99.

CROSSREFS

Union of A061851 and twice A061851. Number of terms with k digits is A006355([n/2]+1).

Adjacent sequences: A061849 A061850 A061851 this_sequence A061853 A061854 A061855

Sequence in context: A143964 A034708 A091784 this_sequence A083511 A067894 A094620

KEYWORD

base,nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), May 10 2001

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.


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