[seqfan] A170817, A170818 xref suggested

Jonathan Post jvospost3 at gmail.com
Wed Dec 23 19:51:50 CET 2009


Other than the trivial 11 in each case, no initial substring
concatenation of the digits shown yields a prime.

The first composite values of A170817 are, of course, a(65) and a(85)?

Shouldn't there be a xref to A083025  	Number of primes congruent to 1
modulo 4 dividing n (with multiplicity).

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