208914

Appears in sequences

• Number of classifications of n elements.at n=9A005646
• a(n) = number of ks that make primorial P(n)/A019565(k)-A019565(k) prime.at n=20A103788
• Matrix square of triangle A121412.at n=29A121416
• Column 1 of triangle A121416.at n=6A121417
• Rectangular table, read by antidiagonals, where row n is equal to column 1 of matrix power A121412^(n+1) for n>=0.at n=34A121426
• Number of subpartitions of partition P=[0,0,1,1,1,2,2,2,2,3,3,3,3,3,4,...] (A052146).at n=28A121431
• Square array, read by antidiagonals, where T(n,k) = T(n,k-1) + T(n-1,k+n+1) for n>0, k>0, such that T(n,0) = T(n-1,n+1) for n>0 with T(0,k)=1 for k>=0.at n=29A136737