21724

Appears in sequences

• Molien series for full 8 X 8 Siegel modular group H_3 of order 371589120.at n=45A027633
• Expansion of Molien series for relative invariants of 8-dimensional complex Clifford group.at n=21A043330
• If p(x) is the x-th prime, then the n-th set of 4 consecutive sexy prime pairs starts at p(a(n)).at n=27A095963
• If p(x) is the x-th prime, then the n-th set of 5 consecutive sexy prime pairs starts at p(a(n)).at n=6A095964
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 329", based on the 5-celled von Neumann neighborhood.at n=31A271275