A020480 Primes p which divide no f(q)-1 or f(q)+1 for prime q < p, where f(q) is the product of all primes <= q.

2, 13, 17, 23, 41, 43, 47, 67, 71, 83, 89, 101, 103, 107, 109, 113, 127, 137, 151, 157, 179, 193, 199, 227, 233, 239, 241, 251, 257, 263, 269, 281, 283, 293, 337, 353, 359, 367, 373, 379, 383, 397, 401, 419, 421, 431, 433, 439, 449, 457, 461, 479, 487, 491, 499, 503, 523

Offset

1,1

Links

Table of n, a(n) for n=1..57.

Crossrefs

Sequence in context: A142339 A348633 A105913 * A352572 A018459 A037384

Adjacent sequences: A020477 A020478 A020479 * A020481 A020482 A020483

Keyword

nonn

Author

David W. Wilson

Status

approved