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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A053649 Start with the prime 11; next prime must exceed previous prime, contain no 0's and start with last digit of previous prime. 1
11, 13, 31, 113, 311, 1117, 7121, 11113, 31121, 111119, 911111, 1111151, 1111157, 7111123, 31111121, 111111113, 311111131, 1111111121, 1111111139, 9111111127, 71111111147, 71111111243, 311111111111, 1111111111139, 9111111111211 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..24.

C. Rivera, Puzzle 45 - Prime Solitaire

EXAMPLE

a(4)=113, so a(5)=311 because a(5) must be greater than a(4) and have no zero digit and the last digit, 3, of 113 must link to the first digit, 3, of 311.

PROG

(PARI) nxtprm(fp) = {fd = digits(fp); ld = fd[#fd]; forprime(p = fp+1, , nd = digits(p); if ((nd[1] == ld) && (vecmin(nd) != 0), return (p))); }

lista(nn) = {fp = 1; for (n=1, nn, np = nxtprm(fp); print1(np, ", "); fp = np; ); } \\ Michel Marcus, Jun 06 2014

CROSSREFS

Cf. A054262 (similar sequence without the 0 digit condition).

Sequence in context: A082238 A179551 A054262 * A104151 A088263 A334556

Adjacent sequences:  A053646 A053647 A053648 * A053650 A053651 A053652

KEYWORD

easy,nonn,base

AUTHOR

Enoch Haga, Feb 18 2000

EXTENSIONS

More terms from Patrick De Geest, Feb 15 2000

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 30 03:24 EDT 2020. Contains 338076 sequences. (Running on oeis4.)