login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A069493 6-full numbers: if p divides n then so does p^6. 1
1, 64, 128, 256, 512, 729, 1024, 2048, 2187, 4096, 6561, 8192, 15625, 16384, 19683, 32768, 46656, 59049, 65536, 78125, 93312, 117649, 131072, 139968, 177147, 186624, 262144, 279936, 373248, 390625, 419904, 524288, 531441, 559872 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

2^7*3^6 = 93312 is a member (although not of A076470).

PROG

(PARI) for(n=1, 560000, if(n*sumdiv(n, d, isprime(d)/d^6)==floor(n*sumdiv(n, d, isprime(d)/d^6)), print1(n, ", ")))

CROSSREFS

Cf. A036967, A036966, A001694. Different from A076470.

Sequence in context: A043335 A023708 A172420 * A076470 A031464 A045076

Adjacent sequences:  A069490 A069491 A069492 * A069494 A069495 A069496

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 15 2002

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 11:25 EST 2012. Contains 205777 sequences.