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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A098330 Maximum entry in n-th row of A097859. 1
2, 2, 4, 6, 10, 14, 18, 16, 17, 25, 20, 28, 20, 28, 28, 27, 34, 38, 42, 42, 33, 27, 46, 56, 33, 43, 59, 112, 86, 60, 70, 46, 62, 76, 60, 55, 50, 39, 42, 66, 74, 92, 58, 52, 64, 54, 42, 50, 70, 73, 99, 142, 128, 84, 68, 59, 81, 88, 85, 101, 121, 53, 78, 72, 45, 62, 48, 78, 47, 90 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Odd numbers not present: 3,5,7,9,11,13,15,19,21,23,29,31,35,37,41,49,57,63,139,149,161,...,.

LINKS

Table of n, a(n) for n=0..69.

MATHEMATICA

PrimeFactors[n_] := Flatten[ Table[ #[[1]], {#[[2]]}] & /@ FactorInteger[n]]; a[m_, 0] = a[m_, m_] = 2; a[m_, n_] := a[m, n] = Plus @@ Join[ PrimeFactors[ a[m - 1, n - 1]], PrimeFactors[ a[m - 1, n]]]; Table[ Max[ Table[ a[m, n], {n, 0, m}]], {m, 0, 60}]

CROSSREFS

Cf. A097859.

Sequence in context: A323587 A236634 A034406 * A240310 A083848 A278297

Adjacent sequences:  A098327 A098328 A098329 * A098331 A098332 A098333

KEYWORD

nonn

AUTHOR

Leroy Quet and Robert G. Wilson v, Sep 03 2004

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 15 14:37 EST 2019. Contains 329999 sequences. (Running on oeis4.)