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

1,1

Comments

Always positive (see A304360).

Links

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

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

Crossrefs

Cf. A304360.

Sequence in context: A188637 A083290 A121842 * A219609 A087825 A263100

Adjacent sequences: A317960 A317961 A317962 * A317964 A317965 A317966

Keyword

nonn

Author

N. J. A. Sloane, Aug 26 2018

Extensions

More terms from Robert Israel, Aug 26 2018

Status

approved