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 A114821 Indices of Fibonacci numbers with 12 prime factors when counted with multiplicity. 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, 1022, 1067, 1089, 1105, 1244, 1246, 1251, 1265, 1285, 1341, 1348 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..54. Blair Kelly, Fibonacci and Lucas Factorizations. EXAMPLE a(1)=48 because the 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). PROG (PARI) n=1; while(n<320, if(bigomega(fibonacci(n))==12, print1(n, ", ")); n++) CROSSREFS Column k=12 of A303215. Sequence in context: A261546 A335938 A335216 * A108098 A114505 A323610 Adjacent sequences: A114818 A114819 A114820 * A114822 A114823 A114824 KEYWORD hard,nonn AUTHOR Shyam Sunder Gupta, Feb 19 2006 EXTENSIONS More terms from Ryan Propper, May 24 2006 More terms from Amiram Eldar, Oct 14 2019 STATUS approved

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Last modified August 4 13:04 EDT 2024. Contains 374921 sequences. (Running on oeis4.)