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 A284923 Numbers with digits 2 and 9 only. 3
 2, 9, 22, 29, 92, 99, 222, 229, 292, 299, 922, 929, 992, 999, 2222, 2229, 2292, 2299, 2922, 2929, 2992, 2999, 9222, 9229, 9292, 9299, 9922, 9929, 9992, 9999, 22222, 22229, 22292, 22299, 22922, 22929, 22992, 22999, 29222, 29229, 29292, 29299, 29922, 29929 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS PROG (MAGMA) [n: n in [1..100000] | Set(IntegerToSequence(n, 10)) subset {2, 9}] CROSSREFS Prime terms are in A020460. Numbers with digits 2 and k only for k = 0 - 1 and 3 - 9: A169965 (k = 0), A007931 (k = 1), A032810 (k = 3), A284920 (k = 4), A072961 (k = 5), A284632 (k = 6), A284921 (k = 7), A284922 (k = 8), this sequence (k = 9). Sequence in context: A342713 A248116 A259702 * A343850 A235707 A056105 Adjacent sequences:  A284920 A284921 A284922 * A284924 A284925 A284926 KEYWORD nonn,base AUTHOR Jaroslav Krizek, Apr 06 2017 STATUS approved

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Last modified June 25 03:59 EDT 2022. Contains 354835 sequences. (Running on oeis4.)