0,1
15876 = 126^2, and external digits 16 is a square; internal digits 587 is prime.
Sequence in context: A134934 A091078 A060861 this_sequence A105925 A014771 A134741
Adjacent sequences: A076392 A076393 A076394 this_sequence A076396 A076397 A076398
base,nonn
Jason Earls (zevi_35711(AT)yahoo.com), Nov 07 2002
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