A071261 Smallest k such that |p(k)-c(k)| is an n-digit number where p(k) is the k-th prime and c(k) is the k-th composite number.

1, 10, 37, 206, 1401, 10626, 85316, 712597, 6117420, 53593619, 476889480, 4295913223, 39084524707, 358521889961, 3311439169717, 30765562102926, 287282165065268, 2694418859703791, 25368958219747617

Offset: 1

Author

Amarnath Murthy, May 30 2002

Keywords

• hard
• more
• nonn
• base

Crossrefs

Cf. A038529.

Extensions

Corrected and extended by Gabriel Cunningham (gcasey(AT)mit.edu), Apr 08 2003

More terms from Sean A. Irvine, Nov 30 2009

a(12)-a(15) from Donovan Johnson, Dec 30 2010

a(16)-a(19) from Chai Wah Wu, Apr 17 2018