|
| |
|
|
A178388
|
|
Concatenation of the first n primes written in base 3.
|
|
1
|
|
|
|
2, 210, 21012, 2101221, 2101221102, 2101221102111, 2101221102111122, 2101221102111122201, 2101221102111122201212, 21012211021111222012121002, 210122110211112220121210021011, 2101221102111122201212100210111101
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Rémy Sigrist, Table of n, a(n) for n = 1..174
|
|
|
EXAMPLE
|
a(4) = Concatenate[prime(1) base 3, prime(2) base 3, prime(3) base 3, prime(3) base 3] = Concatenate[2 base 3, 3 base 3, 5 base 3, 7 base 3] = Concatenate[2, 10, 12, 21] = 2101221.
|
|
|
PROG
|
(PARI) v = 0; for (n=1, 12, d = digits(prime(n), 3); v = v*10^#d + fromdigits(d); print1 (v ", ")) \\ Rémy Sigrist, Aug 07 2017
|
|
|
CROSSREFS
|
Cf. A000040, A001363, A004676, A007088, A007089, A019518, A031974, A100003, A154703.
Sequence in context: A012600 A157479 A092700 * A056065 A317978 A050445
Adjacent sequences: A178385 A178386 A178387 * A178389 A178390 A178391
|
|
|
KEYWORD
|
base,easy,nonn
|
|
|
AUTHOR
|
Jonathan Vos Post, May 26 2010
|
|
|
EXTENSIONS
|
Edited by N. J. A. Sloane, Jul 02 2017
|
|
|
STATUS
|
approved
|
| |
|
|
