A009307 If a, b in sequence, so is ab+6.

2, 10, 26, 58, 106, 122, 218, 250, 266, 442, 506, 538, 586, 682, 890, 1018, 1066, 1082, 1178, 1226, 1370, 1514, 1786, 2042, 2138, 2170, 2186, 2362, 2458, 2506, 2666, 2746, 2762, 3034, 3178, 3370, 3578, 4090, 4282, 4346, 4378, 4426, 4730, 4922, 5018, 5066

Offset

1,1

Links

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

Maple

R:= {2}:
N:= 6000:
Agenda:= {2^2+6};
while Agenda <> {} do
  t:= min(Agenda);
  Agenda:= Agenda minus {t};
  R:= R union {t};
  Agenda:= Agenda union (select(`<=`, map(s -> s*t+6, R), N) minus R);
od:
sort(convert(R, list)); # Robert Israel, Jan 03 2019

Crossrefs

Sequence in context: A294871 A212969 A277712 * A131130 A099969 A241688

Adjacent sequences: A009304 A009305 A009306 * A009308 A009309 A009310

Keyword

nonn

Author

David W. Wilson

Status

approved