A341828 Difference of consecutive odd squarefree semiprimes.

6, 12, 2, 4, 12, 4, 2, 8, 4, 8, 8, 2, 4, 2, 2, 16, 4, 4, 4, 6, 4, 8, 2, 2, 10, 4, 2, 16, 6, 2, 2, 14, 2, 2, 4, 4, 2, 2, 2, 2, 14, 2, 10, 2, 4, 6, 6, 2, 20, 4, 4, 4, 2, 2, 2, 4, 10, 2, 2, 4, 2, 6, 4, 2, 14, 10, 6, 6, 4, 10, 2, 2, 8, 4, 4, 2, 2, 2, 10, 10, 8, 2, 4

Offset: 1

Author

Ravi Bhandari, Feb 20 2021

Keywords

• nonn

Crossrefs

Cf. A006881, A046388.

Programs

PARI

lista(nn) ={my(r=15); forstep(k=17, nn, 2, if(bigomega(k)==2 && issquarefree(k), print1(k-r, ", "); r=k)); } \\ Jinyuan Wang, Mar 01 2021

Extensions

More terms from Jinyuan Wang, Mar 01 2021