A112568 Secondary diagonal of square table A112564 of generalized Flavius Josephus sieves.
1, 3, 13, 61, 241, 1051, 5041, 20161, 91081, 392041, 1681681, 6530173, 27168961, 115590931
Offset: 1
Programs
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PARI
{a(n)=local(A=n,B=0,k=0);if(n==0,1, until(A==B,k=k+1;if(k%(n+1)==0,k=k+1);B=A;A=floor(A*(k+1)/k));1+A)}