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A278107 a(n) is the first k such that A277515(k) is the n-th prime. 2
1, 49, 5, 21, 10, 174, 27, 223, 1656, 3901, 1286, 1847, 5095, 3117, 5678, 1727, 14844, 23678, 10986, 33868, 41241, 42794, 50451, 35301, 39546, 206241, 10561, 89600, 50075, 87273, 75922, 142760, 3493, 236213, 277242, 805287, 619149, 333339 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

COMMENTS

Eggleton et al. show that every prime greater than two occurs in A277515; moreover, each such prime occurs an infinite number of times.

REFERENCES

R. B. Eggleton, J. S. Kimberley and J. A. MacDougall, Square-free rank of integers, submitted.

LINKS

Robert G. Wilson v and Jason Kimberley, Table of n, a(n) for n = 2..62

FORMULA

A277515(a(n)) = A000040(n).

CROSSREFS

Cf. A000040, A277515.

Sequence in context: A203506 A254617 A012120 * A218167 A145583 A304139

Adjacent sequences:  A278104 A278105 A278106 * A278108 A278109 A278110

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Nov 17 2016, and Jason Kimberley, Dec 11 2016

STATUS

approved

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Last modified May 5 23:32 EDT 2021. Contains 343579 sequences. (Running on oeis4.)