A350825 Number of prime 5-tuples with initial member (A086140) between 10^(n-1) and 10^n.
2, 2, 1, 4, 12, 44, 256, 1062, 5838
Offset: 1
Examples
a(1) = 2 because there are just two single-digit primes to start a prime 5-tuple, namely 5 = A022006(1) and 7 = A022007(1). a(2) = 2 because 11 = A022006(2) and 97 = A022007(2) are the only two two-digit primes to start a prime 5-tuple. a(3) = 1 because there is only one three-digit prime to start a prime 5-tuple, namely 101 = A022006(3). Then there are a(4) = 4 four-digit primes, 1481, 1867, 3457 and 5647, which start a prime 5-tuple.
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