|
Search: id:A114821
|
|
|
| A114821 |
|
Indices of Fibonacci numbers with 12 prime factors when counted with multiplicity. |
|
+0
1
|
|
| 48, 60, 90, 126, 176, 258, 297, 315, 375, 385, 410, 430, 441, 459, 474, 475, 496, 555, 609, 621, 627, 638, 682, 710, 711, 729, 734, 759, 805, 814, 826, 854, 875, 897, 903, 906, 908, 925, 932, 935, 981, 987, 994
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Blair Kelly, Fibonacci and Lucas Factorizations.
|
|
EXAMPLE
|
a(1)=48 because 48th fibonacci number(i.e. 4807526976) consists of 12 prime factors (i.e. 2*2*2*2*2*2*3*3*7*23*47*1103)
|
|
PROGRAM
|
(PARI) n=1; while(n<320, if(bigomega(fibonacci(n))==12, print1(n, ", ")); n++)
|
|
CROSSREFS
|
Sequence in context: A121377 A067191 A080854 this_sequence A108098 A114505 A045072
Adjacent sequences: A114818 A114819 A114820 this_sequence A114822 A114823 A114824
|
|
KEYWORD
|
hard,more,nonn
|
|
AUTHOR
|
Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 19 2006
|
|
EXTENSIONS
|
More terms from Ryan Propper (rpropper(AT)stanford.edu), May 24 2006
|
|
|
Search completed in 0.002 seconds
|
