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A147523 a(n) = number of n-digit terms in A058369. 2
3, 8, 37, 195, 1159, 6951, 42421, 261430, 1631123, 10238173, 64536808 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
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
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

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Last modified July 25 01:41 EDT 2024. Contains 374585 sequences. (Running on oeis4.)