This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A067120 a(n) =floor[X/Y] where X= concatenation of first n ODD numbers in increasing order and Y = n-th triangular number. 1
 1, 4, 22, 135, 905, 64662, 4849682, 377197536, 30175802922, 2468929330031, 205744110835938, 17409117070733232, 1492210034634277058, 129324869668304011738, 11315926095976601027106 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(4) floor[1357/(1+2+3+4)] = floor[135.7] =135. MAPLE for i from 1 to 33 do n := 2*i-1:c := n:n := n-2:while(n>0) do g := floor(log(c)/log(10)):c := c+10^(g+1)*n:n := n-2:end do:a[i] := floor(2*c/i/(i+1)):end do:q2 := seq(a[j], j=1..33); CROSSREFS Cf. A067112-A067119. Sequence in context: A197657 A183280 A183281 * A143648 A069835 A007196 Adjacent sequences:  A067117 A067118 A067119 * A067121 A067122 A067123 KEYWORD easy,nonn,base,less AUTHOR Amarnath Murthy, Jan 08 2002 EXTENSIONS More terms from Sascha Kurz, Mar 23 2002 Edited by Charles R Greathouse IV, Apr 27 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 16 03:44 EDT 2019. Contains 324145 sequences. (Running on oeis4.)