|
| |
|
|
A111484
|
|
Triangular numbers all of whose digits are nonprimes.
|
|
0
| |
|
|
0, 1, 6, 10, 66, 91, 190, 406, 496, 666, 861, 946, 990, 1081, 1891, 4186, 6441, 8001, 8646, 8911, 9180, 10011, 10440, 14196, 16110, 19110, 19900, 40186, 41041, 41616, 49141, 64980, 66066, 69006, 80601, 81406, 81810, 84666, 88410, 90100, 91806
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,3
|
|
|
PROG
| (Perl) my $n = 0, $t = 0, $i = 0;
for (; $n < 6293912; $n++, $t += $n) {
if ($t =~ m/^[014689]+$/) {
$i++;
print("$i $t\n");
}
} # Charles R Greathouse IV, Dec 17 2010
|
|
|
CROSSREFS
| Cf. A000217, A002808, A084984.
Sequence in context: A136848 A136849 A136847 * A119041 A105157 A166386
Adjacent sequences: A111481 A111482 A111483 * A111485 A111486 A111487
|
|
|
KEYWORD
| base,easy,nonn
|
|
|
AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 15 2005
|
| |
|
|
