191425

Appears in sequences

• a(n) = (2*n+1)*(3*n+1)*(4*n+1)*(5*n+1).at n=6A033592
• a(n) = ((6*n+7)(!^6))/7, related to A008542 ((6*n+1)(!^6) sextic, or 6-factorials).at n=4A053100
• Numbers k such that phi(k)=p^2, where p is product of digits of k.at n=17A153427
• Number of compositions of n where the difference between largest and smallest parts equals 10 and adjacent parts are unequal.at n=19A214279