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A068820 revision #5

A068820

Ulam numbers that are primes.

2, 3, 11, 13, 47, 53, 97, 131, 197, 241, 409, 431, 607, 673, 739, 751, 983, 991, 1103, 1433, 1489, 1531, 1553, 1709, 1721, 2371, 2393, 2447, 2633, 2789, 2833, 2897, 3041, 3109, 3217, 3371, 3373, 3527, 3547, 3593, 3671, 3691, 4057, 4153, 4211, 4297, 4363

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

OFFSET

1,1

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..49221

CROSSREFS

Cf. A002858.

Sequence in context: A048891 A215358 A191057 * A129670 A215374 A355542

Adjacent sequences: A068817 A068818 A068819 * A068821 A068822 A068823

KEYWORD

easy,nonn

AUTHOR

Naohiro Nomoto, Mar 29 2002

STATUS

approved