login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A114895 Increasing sequence of primes such that sum of any two neighbor terms is a prime power (power of prime). 0
2, 3, 5, 11, 53, 971, 15413, 50123, 4144181, 17175725003, 51543751733, 223334155211, 77371252455336043847040053, 5070525029660462269942965781451 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

The next term has 117 digits:

157608024785577916849116160400574455220318957081861786671793173616982\

887085988842445651994494510002100956568995445813.

FORMULA

a(n)+a(n-1)=p^m, where p is prime; starting with n=3 p=2.

EXAMPLE

2+3=5^1, 5+11=2^4, 11+53=2^6, 53+971=2^10, 971+15413=2^14, 15413+50123=2^16, 50123+4144181=2^22, etc.

CROSSREFS

Sequence in context: A109462 A000905 A065296 * A083685 A087524 A088053

Adjacent sequences:  A114892 A114893 A114894 * A114896 A114897 A114898

KEYWORD

more,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Jan 05 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 05:53 EST 2012. Contains 205570 sequences.