857836

Appears in sequences

• Aliquot sequence starting at 552.at n=27A014360
• Triangle read by rows, T(n,k) n>=0, k>=0, generalization of A000255.at n=38A216154
• Number of (n+5)X(n+5) 0..1 matrices with each 6X6 subblock idempotent.at n=21A224569