A330277 a(n) = k such that A083016(k) = prime(n), or -1 if no such k exists.

1, 16, 7, 2, 8, 17, 11, 12, 18, 3, 26, 29, 19, 46, 10, 9, 20, 23, 36, 4, 5, 134, 24, 39, 15, 47, 56, 28, 33, 25, 64, 50, 21, 118, 205, 42, 87, 172, 38, 41, 126, 193, 78, 51, 65, 108, 196, 48, 14, 111, 105, 92, 123, 6, 35, 22, 75, 346, 143, 45, 96, 27, 76, 40, 81, 101, 130, 91, 110, 311, 49, 100

Offset

1,2

Comments

Conjecture: every prime occurs in A083016, so k always exists.

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Example

a(3) = 7 because A083016(7) = 5 = prime(3).

Maple

# using program in A083016 to produce A[1]...A[m]
for i from 1 to m do B[A[i]]:= i od:
seq(B[ithprime(i)], i=1..numtheory:-pi(A[m]));

Crossrefs

Cf. A083016.

Sequence in context: A303087 A302892 A303627 * A131030 A070580 A298618

Adjacent sequences: A330274 A330275 A330276 * A330278 A330279 A330280

Keyword

nonn

Author

Robert Israel, Dec 08 2019

Status

approved