1,1

Table of n, a(n) for n=1..6.

89888786858483 belongs to the sequence because it is a prime number obtained by concatenating all the consecutive decreasing numbers from 89 to 83 with the primes 89 and 83.

Cf. A053558.

Sequence in context: A317874 A185432 A288285 * A027605 A259801 A095430

Adjacent sequences: A053583 A053584 A053585 * A053587 A053588 A053589

base,nonn

Felice Russo, Jan 19 2000

approved