login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A038397 Concatenate first n squares in reverse order. 11
1, 41, 941, 16941, 2516941, 362516941, 49362516941, 6449362516941, 816449362516941, 100816449362516941, 121100816449362516941, 144121100816449362516941 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

M. Bencze, L.Tutescu, Some Notions and Questions in Number Theory, Sequence 5.

LINKS

M. L. Perez et al., eds., Smarandache Notions Journal

FORMULA

a(n)=(n^2)*10^floor{1+log10[a(n-1)]}+a(n-1), with a(1)=1 - Paolo P. Lava (paoloplava(AT)gmail.com), Jun 20 2008

MAPLE

P:=proc(i) local a, n; a:=1; print(1); for n from 2 by 1 to i do a:=n^2*10^floor(evalf(1+log10(a), 1000))+a; print(a); od; end: P(100); - Paolo P. Lava (paoloplava(AT)gmail.com), Jun 20 2008

CROSSREFS

Sequence in context: A090836 A114529 A177418 * A104349 A091314 A059762

Adjacent sequences:  A038394 A038395 A038396 * A038398 A038399 A038400

KEYWORD

nonn,base

AUTHOR

M.I.Petrescu (mipetrescu(AT)yahoo.com)

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 10:57 EST 2012. Contains 206009 sequences.