|
Search: id:A127333
|
|
|
| A127333 |
|
Numbers that are the sum of 6 consecutive primes. |
|
+0
11
|
|
| 41, 56, 72, 90, 112, 132, 156, 180, 204, 228, 252, 280, 304, 330, 358, 384, 410, 434, 462, 492, 522, 552, 580, 606, 630, 660, 690, 724, 756, 796, 834, 864, 896, 926, 960, 990, 1020, 1054, 1084, 1114, 1140, 1172, 1214, 1250, 1286, 1322, 1362, 1392, 1420
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
a(n) = absolute value of coefficient of x^5 of the polynomial Prod_{j=0,5}(x-prime(n+j)) of degree 6; the zeros of this polynomial are prime(n), ..., prime(n+5).
|
|
MATHEMATICA
|
a = {}; Do[AppendTo[a, Sum[Prime[x + n], {n, 0, 5}]], {x, 1, 50}]; a
|
|
PROGRAM
|
(PARI) 1. {m=50; k=6; for(n=0, m-1, print1(a=sum(j=1, k, prime(n+j)), ", "))} 2. {m=50; k=6; for(n=1, m, print1(abs(polcoeff(prod(j=0, k-1, (x-prime(n+j))), k-1)), ", "))} - Klaus Brockhaus, Jan 12 2007
(SAGE) BB = primes_first_n(60) list = [] for i in range(55): list.append(BB[i]+BB[i+1]+BB[i+2]+BB[i+3]+BB[i+4]+BB[i+5]) list - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 14 2007
|
|
CROSSREFS
|
Cf. A011974, A001043, A034961, A034963, A034964, A127334, A127335, A127336, A127337, A127338, A127339.
Sequence in context: A118636 A116345 A027344 this_sequence A161505 A161613 A139890
Adjacent sequences: A127330 A127331 A127332 this_sequence A127334 A127335 A127336
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Artur Jasinski (grafix(AT)csl.pl), Jan 11 2007
|
|
EXTENSIONS
|
Edited by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 12 2007
|
|
|
Search completed in 0.002 seconds
|
