A082599 Palindromic prime units W appearing four times in second-order fractal palindromic primes WxWmWxW, where part WxW is also a palindromic prime.

3, 7, 11, 131, 151, 919, 10301, 10501, 10601, 12421, 13331, 13931, 14341, 16061, 16561, 30203, 30403, 30703, 32323, 32423, 33533, 35053, 35153, 36263, 37573, 39293, 71917, 72727, 73637, 76367, 78487, 79697, 90709, 91019, 96469, 97379, 98389, 1035301, 1043401

Offset

1,1

Comments

Note also that W may not be further split in this manner (see A082584). - Michael S. Branicky, May 19 2024

Links

Michael S. Branicky, Table of n, a(n) for n = 1..10000

Example

919 is in the sequence because this palindromic prime builds up the second order fractal palindromic prime 919691979196919.

Crossrefs

Cf. A002385, A082584, A082598, A082600.

Sequence in context: A057469 A247229 A082598 * A354082 A123259 A116605

Adjacent sequences: A082596 A082597 A082598 * A082600 A082601 A082602

Keyword

base,nonn

Author

Lekraj Beedassy, May 14 2003

Extensions

Name updated and a(19) and beyond from Michael S. Branicky, May 19 2024

Status

approved