|
| |
|
|
A074172
|
|
Smaller of two consecutive numbers of the form p^2*q where p and q are primes.
|
|
2
| |
|
|
44, 75, 98, 116, 147, 171, 244, 332, 387, 507, 548, 603, 604, 724, 844, 908, 931, 963, 1075, 1083, 1251, 1324, 1412, 1467, 1556, 1587, 1675, 1772, 2523, 2524, 2636, 2644, 2763, 3283, 3356, 3411, 3508, 3788, 3987, 4075, 4203, 4204, 4418, 4491, 4804, 4868
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
EXAMPLE
| 44 is a member as 44 = 2^2*11 and 45 = 3^2*5.
|
|
|
MATHEMATICA
| lst={}; Do[f1=FactorInteger[n]; If[Sort[Transpose[f1][[2]]]=={1, 2}, f2=FactorInteger[n+1]; If[Sort[Transpose[f2][[2]]]=={1, 2}, AppendTo[lst, n]]], {n, 3, 10000}]; lst
|
|
|
CROSSREFS
| Cf. A074173, A074174.
Sequence in context: A156812 A171665 A049103 * A039386 A043209 A043989
Adjacent sequences: A074169 A074170 A074171 * A074173 A074174 A074175
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 30 2002
|
|
|
EXTENSIONS
| More terms from T. D. Noe (noe(AT)sspectra.com), Oct 04 2004
|
| |
|
|
