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 A190651 Years with exactly one "Friday the 13th", starting from 1901. 4
 1902, 1904, 1909, 1910, 1913, 1915, 1916, 1919, 1921, 1924, 1926, 1927, 1930, 1932, 1937, 1938, 1941, 1943, 1944, 1947, 1949, 1952, 1954, 1955, 1958, 1960, 1965, 1966, 1969, 1971, 1972, 1975, 1977, 1980, 1982, 1983, 1986, 1988, 1993, 1994, 1997, 1999, 2000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A101312(a(n)) = 1, 1 <= A101312(n) <= 3. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 Eric Weisstein's World of Mathematics, Triskaidekaphobia Wikipedia, Triskaidekaphobia PROG (Haskell) a190651 n = a190651_list !! (n-1) a190651_list = filter ((== 1) . a101312) [1901..] CROSSREFS Cf. A190652, A190653. Sequence in context: A190652 A177137 A273913 * A237787 A190653 A124628 Adjacent sequences:  A190648 A190649 A190650 * A190652 A190653 A190654 KEYWORD nonn AUTHOR Reinhard Zumkeller, May 16 2011 STATUS approved

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Last modified July 23 19:17 EDT 2021. Contains 346259 sequences. (Running on oeis4.)