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A105517 Number of times 7 is the leading digit of the first n+1 Fibonacci numbers in decimal representation. 9
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,45

COMMENTS

a(n) = #{k: A008963(k) = 7 and 0<=k<=n};

a(A105507(n)) = a(A105507(n) - 1) + 1;

n = A105511(n) + A105512(n) + A105513(n) + A105514(n) + A105515(n) + A105516(n) + a(n) + A105518(n) + A105519(n).

LINKS

Table of n, a(n) for n=0..104.

CROSSREFS

Cf. A000030, A000045.

Sequence in context: A137921 A064876 A262689 * A230774 A056813 A125269

Adjacent sequences:  A105514 A105515 A105516 * A105518 A105519 A105520

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Apr 11 2005

STATUS

approved

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Last modified November 21 14:44 EST 2017. Contains 295002 sequences.