A072306 a(n)-th Fibonacci number is the smallest Fibonacci number containing exactly n 2's.

3, 29, 50, 79, 104, 168, 174, 147, 190, 252, 243, 268, 448, 456, 492, 495, 442, 581, 496, 587, 535, 567, 728, 795, 707, 801, 770, 907, 857, 1053, 1062, 1061, 1146, 911, 1209, 1280, 1368, 1440, 1358, 1322, 1395, 1505, 1559, 1325, 1575, 1571, 1731, 1617, 1676

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Example

a(2)=29 since 29th Fibonacci number 514229 contains exactly two 2's.

Crossrefs

Cf. A000045.

Sequence in context: A367102 A087209 A165440 * A303137 A364076 A228613

Adjacent sequences: A072303 A072304 A072305 * A072307 A072308 A072309

Keyword

base,nonn

Author

Shyam Sunder Gupta, Jul 14 2002

Extensions

a(21)-a(49) from Alois P. Heinz, Apr 26 2017

Status

approved