20082

Appears in sequences

• Coordination sequence for root lattice B_5.at n=5A022147
• a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048225.at n=28A048235
• Numbers which are the sum of their proper divisors containing the digit 4.at n=30A059463
• Number of partitions of n into squarefree parts.at n=46A073576
• Square array A(n,k) read by antidiagonals: coordination sequence for lattice B_n.at n=41A103883
• Square array, read by antidiagonals, where row n equals the coordination sequence of B_n lattice, for n >= 0.at n=60A108998
• Main diagonal of square array A108998, in which row n equals the coordination sequence of B_n lattice.at n=5A108999
• Column 4 of A060244.at n=26A291589
• Growth series for group with presentation < S, T : S^3 = T^3 = (S*T)^4 = 1 >.at n=16A298803
• Growth series for group with presentation < S, T : S^2 = T^3 = (S*T)^8 = 1 >.at n=32A298810
• Number of integer partitions of the n-th squarefree number using squarefree numbers.at n=29A303365
• Number of edges in a hexagon when n internal hexagons are drawn between the 6n points that divide each side into n+1 equal parts.at n=41A357198