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A011757
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a(n) = prime(n^2).
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36
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2, 7, 23, 53, 97, 151, 227, 311, 419, 541, 661, 827, 1009, 1193, 1427, 1619, 1879, 2143, 2437, 2741, 3083, 3461, 3803, 4211, 4637, 5051, 5519, 6007, 6481, 6997, 7573, 8161, 8737, 9341, 9931, 10627, 11321, 12049, 12743, 13499, 14327, 15101, 15877, 16747, 17609, 18461
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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a(4) = 53 as the (4^2)th prime is the 16th prime is 53. - David A. Corneth, Apr 13 2021
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MATHEMATICA
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PROG
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(PARI) first(n) = { my(res = vector(n), t = 0); forprime(p = 2, oo, t++; if(ispower(t, 2, &i), print1([i, p]", "); res[i] = p; if(i >= n, return(res)))) } \\ David A. Corneth, Apr 13 2021
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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