OFFSET
1,1
COMMENTS
Also: Even numbers with more than 2 digits (so you can swap any two digits other than the last one), or numbers having at least one even digit not in the last position (so you can swap that one with the last digit). - M. F. Hasler, Sep 30 2012
LINKS
F. Smarandache, Only Problems, Not Solutions!
FORMULA
a(n) ~ n. - Charles R Greathouse IV, Sep 19 2012
EXAMPLE
22 is a term since the permutation that swaps the first and second digits gives an even number. - N. J. A. Sloane, Sep 30 2012
PROG
(PARI) is_A007930(n)={!bittest(n, 0) & n>99 || while(n\=10, bittest(n, 0) || return(1))} \\ - M. F. Hasler, Sep 30 2012
CROSSREFS
KEYWORD
nonn,base
AUTHOR
R. Muller
EXTENSIONS
Missing terms 112, 114, 116, 118 added by Sean A. Irvine, Feb 19 2018
STATUS
approved