38370

Appears in sequences

• Numbers n such that the sum of smallest prime factors of numbers from 1 to n is divisible by n.at n=15A088824
• Numbers k such that 6*k+1, 6*k+7, 6*k+13, 6*k+19 are consecutive primes.at n=32A090839
• Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001111.at n=5A260362
• Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00001111.at n=5A260368
• Numbers n such that transient part of the unitary aliquot sequence for n sets a new record.at n=21A290143
• Duplicate of A090839.at n=32A296055