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 A007930 Some nontrivial permutation of digits gives an even number. 1
 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 112, 114, 116, 118, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130 (list; graph; refs; listen; history; text; internal format)
 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 Cf. A007959. Sequence in context: A078286 A004461 A008553 * A319678 A270045 A133895 Adjacent sequences:  A007927 A007928 A007929 * A007931 A007932 A007933 KEYWORD nonn,base AUTHOR R. Muller EXTENSIONS Missing terms 112, 114, 116, 118 added by Sean A. Irvine, Feb 19 2018 STATUS approved

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Last modified February 15 16:25 EST 2019. Contains 320136 sequences. (Running on oeis4.)