AUTHOR
_Shyam Sunder Gupta (guptass(AT)rediffmail.com), _, Jul 14 2002
The OEIS is supported by the many generous donors to the OEIS Foundation.
Revision History for A072308
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing all changes.
a(n)-th Fibonacci number is the smallest Fibonacci number containing exactly n 4's.
(history; published version)
(history; published version)
STATUS
editing
approved
DATA
9, 12, 67, 43, 78, 144, 182, 220, 206, 309, 354, 287, 350, 316, 420, 423, 515, 551, 591, 667, 691, 595, 798, 608, 824, 789, 790, 1079, 839, 1030, 1022, 1050, 1195, 1100, 1253, 1217, 1307, 1152, 1293, 1466, 1397, 1436, 1611, 1521, 1738, 1749, 1645, 1721, 1725
MATHEMATICA
With[{fibs=Fibonacci[Range[5000]]}, Flatten[Table[Position[fibs, _?(DigitCount[ #, 10, 4]==n&)][[1]], {n, 50}]]] (* Harvey P. Dale, Jan 26 2013 *)
EXTENSIONS
More terms from Harvey P. Dale, Jan 26 2013
STATUS
approved
editing
NAME
a(n)-th Fibonacci number is the smallest Fibonacci number containing exactly n 4's.
DATA
9, 12, 67, 43, 78, 144, 182, 220, 206, 309, 354, 287, 350, 316, 420, 423, 515, 551, 591, 667
OFFSET
1,1
EXAMPLE
a(2)=12 since 12th Fibonacci number i.e. 144 contains exactly two 4's.
KEYWORD
base,nonn
AUTHOR
Shyam Sunder Gupta (guptass(AT)rediffmail.com), Jul 14 2002
STATUS
approved