A317963 First differences of A304360.

2, 1, 3, 2, 3, 3, 1, 3, 3, 2, 1, 5, 1, 2, 3, 3, 3, 3, 1, 3, 2, 9, 1, 2, 1, 2, 1, 5, 1, 5, 1, 5, 1, 3, 3, 2, 6, 3, 1, 3, 2, 4, 2, 7, 2, 1, 3, 2, 4, 2, 1, 9, 2, 1, 2, 4, 3, 2, 3, 4, 2, 1, 2, 6, 1, 2, 3, 1, 3, 5, 4, 3, 6, 2, 6, 1, 3, 3, 2, 3, 1, 3, 3, 2, 6, 3, 4, 2, 1, 5, 1, 3, 3, 5, 1, 2, 1, 2, 3

Offset: 1

Author

N. J. A. Sloane, Aug 26 2018

Keywords

• nonn

Comments

Always positive (see A304360).

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A304360.

Programs

Maple

A304360:= NULL: count:= 0:
P:= {}:
for n  from 2 while count < 201 do
  pn:= numtheory:-factorset(n);
  if pn intersect P = {} then
    count:= count+1;
    A304360:= A304360, n;
    P:= P union {ithprime(n)};
  fi
od:
A304360:= [A304360]:
A304360[2..-1]-A304360[1..-2]; # Robert Israel, Aug 26 2018

Extensions

More terms from Robert Israel, Aug 26 2018