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!)
 A177061 Primes p formed from single-digit primes only, each used at most once. 1
 2, 3, 5, 7, 23, 37, 53, 73, 257, 523, 2357, 2753, 3257, 3527, 5237, 7253, 7523 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS List of (p,i): (2,1), (3,2), (5,3), (7,4), (23,9), (37,12), (53,16), (73,21), (257,55), (523,99), (2357,350), (2753,402), (3257,460), (3527,492), (5237,697), (7253,928), (7523,953) REFERENCES E. I. Ignatjew, Mathematische Spielereien, Urania Verlag Leipzig/Jena/Berlin 1982 LINKS EXAMPLE 3//7 = 37 = prime(12) is the 6th term. 2//3//5//7 = 2357 = prime(350) is the 11th term p = 7//5//2//3 = 7523 = prime(953) = A033548(59) is the last term. CROSSREFS Cf. A000040, A168349, A168385 Sequence in context: A096148 A211681 A124674 * A020994 A085823 A284060 Adjacent sequences:  A177058 A177059 A177060 * A177062 A177063 A177064 KEYWORD easy,base,fini,full,nonn AUTHOR Eva-Maria Zschorn (e-m.zschorn(AT)zaschendorf.km3.de), May 02 2010 EXTENSIONS Edited by Assoc. Eds. OEIS, May 09 2010 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 August 4 13:04 EDT 2020. Contains 336201 sequences. (Running on oeis4.)