A114825 Indices of Fibonacci numbers with 11 distinct prime factors.

140, 144, 150, 160, 162, 190, 204, 208, 230, 234, 261, 285, 306, 310, 345, 351, 354, 372, 387, 388, 399, 438, 459, 469, 470, 475, 483, 485, 488, 507, 508, 518, 531, 549, 568, 596, 598, 632, 656, 671, 686, 688, 715, 788, 806, 808, 822, 834, 844, 872, 873, 874, 902, 925, 1005, 1048, 1052, 1058, 1073, 1076, 1083, 1101, 1113, 1124, 1131, 1146, 1158, 1162, 1166, 1173, 1195, 1205, 1221

Offset: 1

Author

Shyam Sunder Gupta, Feb 19 2006

Keywords

• nonn

Examples

			a(1)=140 because the 140th Fibonacci number (i.e., 81055900096023504197206408605) consists of 11 distinct prime factors (i.e., 3 * 5 * 11 * 13 * 29 * 41 * 71 * 281 * 911 * 141961 * 12317523121).
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..81
• Blair Kelly, Fibonacci and Lucas Factorizations.

Crossrefs

Column k=11 of A303217.

Programs

PARI

n=1;while(n<315,if(omega(fibonacci(n))==11,print1(n,", "));n++)

Extensions

More terms from Ryan Propper, Apr 26 2006

a(52)-a(73) from Max Alekseyev, Aug 18 2013