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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A073770 Primes p not of the form q + s where q is prime and s > 0 is the smallest square such that q + s is prime. 0
2, 5, 13, 19, 29, 31, 37, 43, 61, 67, 73, 79, 103, 109, 127, 139, 151, 157, 163, 179, 181, 191, 193, 199, 211, 223, 229, 241, 271, 277, 283, 313, 331, 337, 349, 359, 367, 373, 379, 397, 409, 421, 431, 433, 439, 463, 487, 499, 521, 523, 541, 547, 569, 571, 577 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

A065377 is a subsequence of this sequence. Except for the initial term 2 this sequence is disjoint to A073609.

EXAMPLE

13 cannot be partitioned into a prime and a square > 0, so 13 is a term. The only partition of 19 into a prime and a square > 0 is (3,16), but 16 is not the smallest square s such that 3 + s is prime since 3 + 4 = 7 is also prime; therefore 19 is a term.

CROSSREFS

Cf. A065377, A073609.

Sequence in context: A104491 A038950 A019390 * A077545 A069943 A094158

Adjacent sequences:  A073767 A073768 A073769 * A073771 A073772 A073773

KEYWORD

nonn

AUTHOR

Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Aug 08 2002

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 12 18:43 EST 2012. Contains 205432 sequences.