|
Search: id:A124729
|
|
|
| A124729 |
|
Numbers n such that n, n+1, n+2 and n+3 are products of 5 primes. |
|
+0
2
|
|
| 57967, 491875, 543303, 584647, 632148, 632149, 715374, 824523, 878875, 914823, 930123, 931623, 955448, 964143, 995874
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Subset of A045940 Numbers n such that factorizations of n through n+3 have same number of primes (including multiplicities). Cf. A124057, A124728 Numbers n such that n, n+1, n+2 and n+3 are products of exactly 3,4 primes. There are no numbers n such that n, n+1, n+2 and n+3 are products of exactly 6 primes(?)
|
|
LINKS
|
D. W. Wilson, Table of n, a(n) for n = 1..10000
|
|
EXAMPLE
|
57967=7^3*13^2, 57968=2^4*3623, 57969=3^3*19*113, 57970=2*5*11*17*31 (all product of 5 primes (including multiplicities)};
632148 is the first number such that n through n+4 are 5-almost primes.
|
|
CROSSREFS
|
Cf. A045940, A124057, A124728.
Sequence in context: A069335 A031861 A119887 this_sequence A075980 A046323 A017081
Adjacent sequences: A124726 A124727 A124728 this_sequence A124730 A124731 A124732
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Zak Seidov (zakseidov(AT)yahoo.com), Nov 05 2006
|
|
|
Search completed in 0.002 seconds
|
