31982

Appears in sequences

• Numbers n such that 30*n+7, 30*n+11, 30*n+13, 30*n+17, 30*n+19 are consecutive primes.at n=29A089157
• Numbers n such that 30*n+{1,7,11,13,17,19,29} are all prime.at n=3A100423
• Smallest even number k such that lpf(k-3) = prime(n) while lpf(k-1) > lpf(k-3), where lpf=least prime factor (A020639).at n=28A242490
• Number of "forceless" (or "useless") sequences in n-column Nonogram puzzle.at n=25A304179
• Numbers k such that there are exactly 7 primes between 30*k and 30*k+30.at n=11A385124