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 A210416 List the positions of all digits 2 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence. 10
 2, 20, 1, 6, 21, 9, 22, 10, 15, 23, 19, 222, 220, 25, 27, 29, 32, 35, 200, 40, 201, 45, 202, 47, 52, 203, 51, 59, 204, 64, 205, 69, 206, 74, 207, 79, 208, 84, 209, 89, 210, 94, 211, 99, 212, 101, 108, 213, 114, 214, 120, 215, 118, 127, 132, 216, 131, 141, 217 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A210415 for comments, links, and code. See A098670 for a variant with increasing terms. - M. F. Hasler, Oct 08 2013 LINKS Danny Rorabaugh, Table of n, a(n) for n = 1..1000 EXAMPLE The sequence starts with 2: the second digit is equal to 2. In the second position we cannot write only 2 because the first number is already 2. So we use the minimum number greater than 2 and beginning with digit 2, i.e., 20. In the third position we can write 1 because the digit in the first position is 2. And so on. CROSSREFS Cf. A098670, A210414-A210423. Sequence in context: A355466 A073444 A301637 * A351312 A220943 A082259 Adjacent sequences: A210413 A210414 A210415 * A210417 A210418 A210419 KEYWORD nonn,base AUTHOR Paolo P. Lava, Mar 26 2012 STATUS approved

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Last modified April 1 05:25 EDT 2023. Contains 361673 sequences. (Running on oeis4.)