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 A011537 Numbers that contain at least one 7. 30
 7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97, 107, 117, 127, 137, 147, 157, 167, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 187, 197, 207, 217, 227, 237, 247, 257, 267, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 287 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of primes is A257668. - Bernard Schott, Jul 21 2021 LINKS Muniru A Asiru, Table of n, a(n) for n = 1..5000 FORMULA a(n) ~ n. - Charles R Greathouse IV, Feb 12 2017 MATHEMATICA Select[Range[300], DigitCount[#, 10, 7]>0&] (* Harvey P. Dale, Mar 29 2016 *) PROG (PARI) is(n)=!!setsearch(Set(digits(n)), 7) \\ Charles R Greathouse IV, Feb 12 2017 (GAP) Filtered([1..280], n->7 in ListOfDigits(n)); # Muniru A Asiru, Feb 23 2019 (Python) def ok(n): return '7' in str(n) print(list(filter(ok, range(290)))) # Michael S. Branicky, Jul 17 2021 CROSSREFS Complement of A052419. Cf. A257668. Sequence in context: A300186 A261934 A253075 * A283610 A043517 A277594 Adjacent sequences:  A011534 A011535 A011536 * A011538 A011539 A011540 KEYWORD nonn,base,easy AUTHOR STATUS approved

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Last modified September 16 21:28 EDT 2021. Contains 347473 sequences. (Running on oeis4.)