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A376488
a(n) is the least k such that A375422(k) = n.
1
1, 2, 4, 9, 13, 16, 18, 21, 71, 72, 75, 77, 79, 82, 84, 85, 88, 93, 95, 97, 470, 472, 475, 497, 500, 511, 515, 526, 529, 544, 557, 2618, 2738, 2743, 2744, 2749, 2761, 2762, 2827, 2832, 2835, 2862, 2890, 2892, 2895, 2896, 2901, 2902, 2910, 2932, 2938, 2955
OFFSET
1,2
COMMENTS
In other words, a(n) is the least k such that the set {(1, prime(1)), (2, prime(2)), ..., (k, prime(k))} contains n aligned points (where prime(k) denotes the k-th prime number).
Is this sequence infinite?
LINKS
Rémy Sigrist, PARI program
PROG
(PARI) \\ See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Sep 25 2024
STATUS
approved