A366702 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A366702

Numbers k such that 12^k + 1 is a semiprime.

0

2, 4, 5, 11, 16, 32, 109, 128, 193

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

11 is in this sequence because 12^11+1 = 13*57154490053 is a semiprime.

CROSSREFS

Cf. A178248, A001358, A004064, A366582.

Sequence in context: A370633 A256570 A284427 * A089416 A056817 A352255

Adjacent sequences: A366699 A366700 A366701 * A366703 A366704 A366705

KEYWORD

nonn,more

AUTHOR

Sean A. Irvine, Oct 16 2023

STATUS

approved