A129248 a(n) = n-th prime of class 14- according to the Erdős-Selfridge classification.

377982107, 437391349, 716174549, 742922699, 1385934359, 1603768277, 1780127639, 1790436371, 1895437139, 1968261067, 2066951933, 2109424013, 2148523669, 2150787839, 2238778847, 2299583987, 2334899909, 2368121663

Offset

1,1

Comments

a[1..2] calculated using A081641[1..11]; a[3] <= 716174549.

Links

M. F. Hasler, Table of n, a(n) for n=1..339

Formula

{ a(n) } = { p = 2*m*A081641(k)+1 | k=1,2,...,oo and m=1,2,... such that p is prime and m has no factor of class > 13- }

Prog

(PARI) A129248 = nextclassminus(A081641) /* cf. A081640 */

Crossrefs

Cf. A056637, A081640, A081641, A129249, A129250.

Sequence in context: A101640 A233798 A230528 * A204807 A257954 A218455

Adjacent sequences: A129245 A129246 A129247 * A129249 A129250 A129251

Keyword

nonn

Author

M. F. Hasler, Apr 05 2007, Apr 21 2007

Status

approved