A072311 a(n)-th Fibonacci number is the smallest Fibonacci number containing exactly n 7's.

16, 14, 54, 49, 107, 116, 132, 223, 236, 310, 249, 396, 299, 359, 414, 521, 476, 518, 566, 555, 689, 715, 740, 700, 754, 704, 1032, 895, 1017, 934, 946, 1006, 1131, 1305, 1186, 1261, 1352, 1254, 1425, 1321, 1553, 1410, 1493, 1668, 1528, 1734, 1590, 1441, 1841

Offset

1,1

Links

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

Example

a(2)=14 since 14th Fibonacci number i.e. 377 contains exactly two 7's.

Crossrefs

Cf. A000045.

Sequence in context: A070577 A184752 A291468 * A221814 A159454 A334350

Adjacent sequences: A072308 A072309 A072310 * A072312 A072313 A072314

Keyword

base,nonn

Author

Shyam Sunder Gupta, Jul 14 2002

Extensions

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

Status

approved