A014888 n is equal to the number of 4s in all numbers <= n written in base 7.

761729, 761730, 823543, 1585272, 1585273, 1647086, 2408815, 2408816, 2470629, 3232358, 3232359

Offset

1,1

Links

Table of n, a(n) for n=1..11.

Crossrefs

Cf. A014778, A014886.

Sequence in context: A183825 A254074 A014889 * A234990 A043673 A233415

Adjacent sequences: A014885 A014886 A014887 * A014889 A014890 A014891

Keyword

nonn,base,fini,full

Author

Olivier Gérard

Extensions

List proved complete by Hugo van der Sanden (cf. A014886).

Status

approved