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 A178334 Number of mountain numbers <= n. 5
 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS a(n) = SUM(A178333(k): 0<=k<=n); a(n) = 21846 for n >= 12345678987654321. LINKS R. Zumkeller, Table of n, a(n) for n = 0..20000 CROSSREFS Cf. A135417. Sequence in context: A103131 A112347 A057427 * A185016 A185015 A185014 Adjacent sequences:  A178331 A178332 A178333 * A178335 A178336 A178337 KEYWORD nonn AUTHOR Reinhard Zumkeller, May 25 2010 STATUS approved

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