A376191 Indices of prime terms in A375564, and also the index where the n-th prime appears.
2, 3, 8, 9, 18, 19, 20, 21, 40, 41, 42, 43, 44, 45, 84, 85, 86, 87, 88, 89, 90, 91, 92, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 649, 650, 651
Offset: 1
Keywords
Examples
A375564 begins 1, 2, 3, 4, 6, 8, 10, 5, 7, 9, 12, 14, 16, 18, 15, 20, 22, 11, 13, 17, 19, ... and the first few primes are at indices 2, 3, 8, 9, 18, 19, 20, 21, ...
Links
- N. J. A. Sloane, Table of n, a(n) for n = 1..393
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