|
Search: id:A063474
|
|
| |
|
| 1, 2, 3, 8, 10, 24, 42, 128, 162, 400, 682, 1920, 2730, 6272, 9900, 32768, 43690, 93312, 174762, 493440, 682668, 1672704, 2796202, 8257536, 10125000, 26153088, 42384060, 126322560, 175923744, 380160000, 715827882, 2144133120
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Harry J. Smith, Table of n, a(n) for n=1,...,250
|
|
FORMULA
|
a(n)=A023022[A000051(n)]
|
|
PROGRAM
|
(PARI) H(n)=eulerphi(n)/2; j=[]; for(n=1, 40, j=concat(j, H(2^n+1))); j
(PARI) { for (n=1, 250, write("b063474.txt", n, " ", eulerphi(2^n + 1)/2) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 22 2009]
|
|
CROSSREFS
|
Cf. A023022, A000051.
Sequence in context: A098844 A034437 A138880 this_sequence A163492 A025562 A107401
Adjacent sequences: A063471 A063472 A063473 this_sequence A063475 A063476 A063477
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Jason Earls (zevi_35711(AT)yahoo.com), Jul 27 2001
|
|
|
Search completed in 0.002 seconds
|
