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A036233
Inverse Colombian function.
1
1, 1, 3, 1, 5, 3, 7, 1, 9, 5, 5, 3, 5, 7, 3, 1, 5, 9, 7, 20, 3, 20, 1, 3, 5, 20, 9, 1, 7, 3, 31, 5, 3, 20, 31, 9, 5, 1, 3, 7, 20, 42, 31, 7, 9, 20, 5, 42, 1, 31, 3, 7, 53, 9, 31, 20, 3, 5, 7, 42, 53, 1, 9, 64, 31, 42, 20, 53, 3, 1, 5, 9, 7, 64, 75, 31, 1, 42, 5, 20, 9, 53, 7, 3, 64, 86, 75, 20
OFFSET
1,3
COMMENTS
a(n) is the smallest x with n in the digit summing sequence starting with x.
Contains only self-numbers, see A003052.
LINKS
Sean A. Irvine, Java program (github)
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Miklos SZABO (mike(AT)ludens.elte.hu)
STATUS
approved