The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A013601 a(n) = nextprime(7^n)-7^n. 6
 1, 4, 4, 4, 10, 4, 10, 4, 16, 4, 18, 10, 16, 40, 4, 66, 6, 24, 48, 24, 16, 52, 102, 4, 46, 60, 10, 24, 76, 10, 114, 18, 90, 40, 24, 36, 6, 72, 22, 24, 232, 10, 54, 60, 216, 160, 174, 34, 48, 24, 382, 88, 48, 10, 124, 10, 58, 34, 132, 214, 46, 22, 40, 136 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Daniel Starodubtsev, Table of n, a(n) for n = 0..1000 FORMULA a(n) = A063767(n)-7^n = A013632(7^n). - R. J. Mathar, Nov 28 2016 MAPLE seq(nextprime(7^i)-7^i, i=0..100); PROG (PARI) a(n) = nextprime(7^n+1) - 7^n; \\ Michel Marcus, Aug 13 2019 CROSSREFS Cf. A013632, A063767. Sequence in context: A075561 A256796 A117405 * A219802 A219460 A220010 Adjacent sequences:  A013598 A013599 A013600 * A013602 A013603 A013604 KEYWORD nonn AUTHOR James Kilfiger (mapdn(AT)csv.warwick.ac.uk) STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified September 19 08:05 EDT 2021. Contains 347556 sequences. (Running on oeis4.)