OFFSET
1,1
REFERENCES
Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000
LINKS
Georg Fischer, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = n*(10^floor(2*log_10(n) + 1) + n). - Henry Bottomley, May 18 2000
a(n) ~ n^3. - Charles R Greathouse IV, Sep 19 2012
MATHEMATICA
Table[FromDigits[Join[IntegerDigits[n], IntegerDigits[n^2]]], {n, 40}] (* Harvey P. Dale, May 24 2012 *)
PROG
(Magma) [Seqint(Intseq(n^2) cat Intseq(n)): n in [1..40]]; // Vincenzo Librandi, Jan 03 2015
(Python)
def a(n): return int(str(n) + str(n*n))
print([a(n) for n in range(1, 40)]) # Michael S. Branicky, Nov 24 2021
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Felice Russo, Feb 25 2000
EXTENSIONS
More terms from James A. Sellers, Feb 28 2000
STATUS
approved