1,1

No further record up to index 160000 in the 3-almost prime list, i.e. a(4)>634898 if existing. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 30 2008

a(n) = records in A114403/log(A014612(n)) = records in (A014612(n+1) - A014612(n))/log(A014612(n))).

Records defined in terms of A114403 and A014612

n A114403(n) A114404(n)/log(A014612(n)).

1 4 4/log8 = 4.42923746

2 6 6/log12 = 5.55977045

3 2 2/log18 = 1.59327954

4 7 7/log20 = 5.38035251

5 1 1/log27 = 0.698634425

6 2 2/log 28 = 1.38201907

7 12 12/log 30 = 8.12390991

...

19 14 14/log 78 = 7.3992072

Cf. A014612, A065516, A111870, A111871, A114403-A114411, A114412-A114422.

Sequence in context: A105308 A116983 A078426 this_sequence A152678 A110758 A074162

Adjacent sequences: A114410 A114411 A114412 this_sequence A114414 A114415 A114416

easy,nonn,more,bref

Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 25 2005