A361327 a(n) is the greatest prime factor of A361321(n) with a(1) = 1.

1, 3, 5, 7, 7, 11, 11, 7, 13, 13, 5, 11, 11, 7, 13, 13, 17, 17, 19, 19, 17, 17, 7, 5, 23, 23, 19, 19, 11, 23, 23, 13, 11, 29, 29, 7, 13, 31, 31, 23, 23, 37, 37, 11, 29, 29, 11, 41, 41, 31, 31, 13, 43, 43, 37, 37, 17, 47, 47, 53, 53, 59, 59, 61, 61, 13, 13, 67, 67, 71, 71, 73, 73, 79, 79, 11, 17

Offset

1,2

Links

Scott R. Shannon, Table of n, a(n) for n = 1..10000

Example

A361321(3) = 10 = 2*5, so a(3) = 5.

Crossrefs

Cf. A361321, A000469, A361328 (least prime factor), A361329, A361329, A336957, A360519, A361120.

Sequence in context: A367928 A254764 A109535 * A180496 A082433 A082683

Adjacent sequences: A361324 A361325 A361326 * A361328 A361329 A361330

Keyword

nonn

Author

Scott R. Shannon, Rémy Sigrist and N. J. A. Sloane, Mar 15 2023

Status

approved