The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A084747 Leading diagonal of triangle shown below in which the n-th row contains the n smallest numbers > 0 such that when they are incremented by n yield a prime. 1
 1, 3, 8, 9, 14, 17, 24, 29, 32, 33, 42, 47, 54, 57, 58, 63, 72, 79, 84, 87, 88, 91, 108, 113, 114, 123, 124, 129, 138, 143, 150, 159, 160, 163, 164, 175, 190, 191, 194, 199, 210, 215, 226, 227, 232, 235, 246, 259, 262, 263, 266, 279, 294, 295, 298, 303, 310, 315 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA a(n) = prime(primepi(n) + n) - n. - Richard R. Forberg, Mar 22 2021 EXAMPLE Triangle begins:   1;   1,  3;   2,  4,  8;   1,  3,  7,  9;   2,  6,  8, 12, 14;   1,  5,  7, 11, 13, 17;   4,  6, 10, 12, 16, 22, 24;   ... so sequence is 1, 3, 8, 9, 14, 17, 24, ... PROG (PARI) a(n) = prime(primepi(n) + n) - n; \\ Michel Marcus, Mar 28 2021 CROSSREFS For triangle see A084695. Cf. A000040 (prime), A000720 (primepi). Sequence in context: A239388 A259850 A071677 * A286177 A287579 A289142 Adjacent sequences:  A084744 A084745 A084746 * A084748 A084749 A084750 KEYWORD easy,nonn AUTHOR Amarnath Murthy and Jason Earls, Jul 12 2003 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 January 27 22:40 EST 2022. Contains 350654 sequences. (Running on oeis4.)