A258199 a(n) = largest term of A001563 <= n.

0, 1, 1, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18

Offset: 0

Author

Antti Karttunen, May 23 2015

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 0..4319

Crossrefs

Cf. A001563, A258198, A256450, A276334.

Programs

Mathematica

Table[# #! &@ NestWhile[# + 1 &, 0, # #! <= n &[# + 1] &], {n, 0, 96}] (* Michael De Vlieger, Aug 31 2016 *)

Formula

a(n) = A001563(A258198(n)).