A147523 a(n) = number of n-digit terms in A058369.

3, 8, 37, 195, 1159, 6951, 42421, 261430, 1631123, 10238173, 64536808

Offset

1,1

Links

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

Example

a(1)=3: 0,1,9; a(2)=8: 10,18,19,45,46,55,90,99.

Crossrefs

A058369 Numbers n such that n and n^2 have same digit sum. A004159 Sum of digits of n^2. A007953 Digital sum (i.e. sum of digits) of n.

Sequence in context: A276939 A188327 A024039 * A123981 A123985 A219953

Adjacent sequences: A147520 A147521 A147522 * A147524 A147525 A147526

Keyword

base,nonn

Author

Zak Seidov, Apr 25 2009

Extensions

a(9) from Donovan Johnson, Dec 08 2009

a(10)-a(11) from Donovan Johnson, Jul 31 2011

Status

approved