A159827 a(n) = number of n-digit terms in A023086.

1, 0, 0, 0, 0, 12, 288, 4032, 47904, 398736, 2668464

Offset

1,6

Comments

1. There are no terms in A023086 with number of digits in the range 2..5: a(2..5)=0, then a(6)=12, a(7)=288 etc.

2. Minimal and maximal n-digit terms (n>=6) in A023086 are (10^(n-1)+25874) and (5*10^(n-1)-71429).

Links

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

Crossrefs

A023086 n and 2*n are anagrams. A159816 Seven-digit terms in A023086.

Sequence in context: A275562 A275087 A267670 * A192191 A145448 A321938

Adjacent sequences: A159824 A159825 A159826 * A159828 A159829 A159830

Keyword

base,nonn

Author

Zak Seidov, Apr 22 2009

Status

approved