A251541 Index of first term in A098550 that is divisible by the n-th prime.

2, 3, 7, 8, 20, 21, 28, 41, 49, 59, 60, 77, 85, 86, 99, 112, 125, 130, 140, 151, 156, 165, 173, 192, 202, 213, 220, 231, 236, 245, 272, 281, 294, 299, 322, 327, 336, 353, 362, 373, 384, 391, 412, 421, 428, 433, 450, 477, 488, 495, 504, 521, 526, 539, 548, 569, 580, 587

Offset: 1

Author

N. J. A. Sloane, Dec 15 2014

Keywords

• nonn

Comments

It is known that every prime divides some term of A098550, so the sequence exists.

Conjectures. 1: Equals first column of A251716. 2: For n > 4, a(n) = A251239(n) - 2. - Reinhard Zumkeller, Dec 15 2014

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..3000 (First 500 terms from N. J. A. Sloane)

Crossrefs

Cf. A098550, A251239, A251544, A251716.

Cf. A253297.