A096515 Solutions to A096509[x]=4; number of prime-powers [including primes] in the neighborhood of x with Ceiling[Log[x]] radius equals 4.

3, 4, 5, 6, 7, 9, 11, 14, 16, 21, 23, 25, 26, 30, 31, 33, 45, 62, 63, 64, 66, 68, 69, 76, 78, 84, 102, 104, 105, 106, 108, 123, 124, 125, 127, 128, 129, 130, 132, 163, 167, 168, 169, 173, 175, 193, 194, 195, 196, 197, 227, 228, 229, 233, 235, 237, 238, 239, 245, 257

Offset

1,1

Links

Table of n, a(n) for n=1..60.

Example

n=63: in [58,68], {59,61,64,67} are the 4 corresponding prime powers.

Crossrefs

Sequence in context: A091815 A081692 A161346 * A100586 A139372 A226116

Adjacent sequences: A096512 A096513 A096514 * A096516 A096517 A096518

Keyword

nonn

Author

Labos Elemer, Jul 12 2004

Status

approved