A136372 Prime factors of terms of A127263.

3, 19, 571, 9137, 41113, 174763, 274081, 1236787, 7485811, 23474953, 34630009, 47822393, 69171211, 92346689, 160465489

Offset

1,1

Comments

From Alexander Adamchuk, May 14 2010: (Start)

3 divides A127263(n) for n > 1.

19 divides A127263(n) for n > 2. (End)

Links

Table of n, a(n) for n=1..15.

Example

A127263(1) = 1,
A127263(2) = 3,
A127263(3) = 57 = 3*19,
A127263(4) = 32547 = 3*19*571,
A127263(5) = 9961491 = 3*19*174763,
A127263(6) = 297381939 = 3*19*571*9137.

Crossrefs

Cf. A127263, A128677, A128678, A128679, A128680, A128681, A128682, A128683, A128684, A128685, A136373.

Cf. A177813, A177814, A177816, A177817, A177818, A177819, A177820. - Alexander Adamchuk, May 14 2010

Sequence in context: A051381 A307080 A337528 * A272571 A355615 A329470

Adjacent sequences: A136369 A136370 A136371 * A136373 A136374 A136375

Keyword

nonn,hard,more

Author

Alexander Adamchuk, Dec 27 2007

Extensions

Edited and extended by Max Alekseyev, May 14 2010

Status

approved