47662

Appears in sequences

• [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 2 mod 3}.at n=20A024402
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 6 and 7.at n=33A136993
• Second entry in row n of triangle in A169950.at n=31A169952
• Partial sums of A299894.at n=46A299895
• Total number of sub-subsets of set partitions of [n] where each subset is again partitioned into nonempty subsets.at n=8A325929
• a(n+1) is the least k such that k - (a(n-1)+a(n)) and k + (a(n-1)+a(n)) are primes; a(0)=0, a(1)=1.at n=20A381328