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 A226179 Fixed points of A218468 (= least unused number which is a multiple of a digit of the preceding term). 1
 1, 2, 10, 19, 20, 34, 51, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Indices k for which A218468(k)=k, where A218468(k) is the least unused number to be a multiple of one digit of the preceding term of that sequence. Hans Havermann first stated that 2*10^k is such a fixed point, for all k >= 0. More subsequences have been given by Lars Blomberg, see link. LINKS Table of n, a(n) for n=1..68. Hans Havermann, Table of a218468(n) = n L. Blomberg, H. Havermann et al., in reply to E. Angelini's OP, Re: a(n+1) is the multiple of at least one digit of a(n), SeqFan list, May 29 2013. CROSSREFS Cf. A218468. Sequence in context: A156446 A032685 A085936 * A030570 A039560 A299577 Adjacent sequences: A226176 A226177 A226178 * A226180 A226181 A226182 KEYWORD nonn,base AUTHOR M. F. Hasler, May 30 2013 STATUS approved

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Last modified May 31 12:12 EDT 2023. Contains 363066 sequences. (Running on oeis4.)