OFFSET
1,2
COMMENTS
The sequence is also given by taking the smallest positive integer n such that A000005(n) is not already in the sequence. - Drake Thomas, May 05 2015
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
MAPLE
A036459:= proc(n) option remember;
procname(numtheory:-tau(n))+1;
end proc:
select(t -> A036459(t)::even, [$1..1000]); # Robert Israel, Aug 31 2015
MATHEMATICA
Position[Table[Length[FixedPointList[DivisorSigma[0, #] &, n]] - 2, {n, 170}], _Integer?EvenQ] // Flatten (* Michael De Vlieger, Aug 31 2015, after Robert G. Wilson v at A036459 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Matthew Vandermast, Jan 05 2011
STATUS
approved