

A333234


Nonprimes describing the nonprime digits' positions in a way explained in the Comments section.


2



20, 40, 34, 64, 76, 84, 200, 106, 300, 118, 210, 270, 248, 124, 140, 324, 221, 231, 261, 338, 150, 170, 186, 364, 384, 341, 390, 371, 424, 451, 161, 481, 506, 511, 548, 570, 600, 551, 581, 611, 628, 636, 656, 664, 688, 714, 694, 749, 721, 750, 794
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OFFSET

1,1


COMMENTS

"20" must be read: "At position 2, there is a 0". And indeed, there is, when considering the sequence as a string of concatenated digits;
"40" reads: "At position 4, there is a 0"  which is true;
"34" reads: "At position 3, there is a 4"  which is also true;
...
"200" reads: "At position 20, there is a 0"  which is true (the central 0 in 300); etc.


LINKS

Carole Dubois, Table of n, a(n) for n = 1..4103


CROSSREFS

Sequence in context: A054288 A238245 A215144 * A040380 A154044 A235289
Adjacent sequences: A333231 A333232 A333233 * A333235 A333236 A333237


KEYWORD

base,nonn


AUTHOR

Eric Angelini and Carole Dubois, Mar 12 2020


STATUS

approved



