A285224 Indices of primes in A027998.
3, 4, 5, 7, 11, 28, 45, 47, 71, 115, 135, 205, 230, 258, 408, 409, 665, 703, 915, 934, 3912, 5031, 5746, 6078, 6391, 7979, 11267, 11296, 14666, 17555, 22073, 23583, 30029, 36150, 51253, 54365, 57557, 68475
Offset: 1
Keywords
Examples
11 is in the sequence because A027998(11) = 13309 is prime.
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