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A361127 Let p = n-th odd prime; a(n) = index where 2*p appears in A360519, or -1 if 2*p never appears. 1
2, 3, 11, 16, 28, 24, 32, 40, 48, 51, 55, 59, 84, 96, 104, 120, 123, 127, 144, 148, 160, 164, 176, 200, 203, 207, 208, 211, 236, 252, 260, 276, 280, 304, 308, 312, 332, 336, 344, 368, 376, 388, 392, 400, 404, 428, 452, 468, 472, 480, 496, 500, 508, 520, 532, 556, 560 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
It is conjectured that every 2*prime(n) (n>1) appears in A360519. A proof of this would be a big step towards proving that every term of C appears in A360519.
LINKS
N. J. A. Sloane, Table of n, a(n) for n = 1..5062
EXAMPLE
p = 11 is the 4th odd prime, and A360519(16) = 2*11 = 22, so a(4) = 16.
CROSSREFS
Cf. A360519, A360103.
Sequence in context: A071012 A354742 A228520 * A280969 A349565 A091734
Adjacent sequences: A361124 A361125 A361126 * A361128 A361129 A361130
KEYWORD
nonn
AUTHOR
Scott R. Shannon and N. J. A. Sloane, Mar 08 2023
STATUS
approved

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Last modified August 30 15:13 EDT 2024. Contains 375545 sequences. (Running on oeis4.)