193993800

Appears in sequences

• Coefficients for extrapolation.at n=9A002738
• a(n) = 15*(n+1)*binomial(n+3,10).at n=12A027795
• a(n) = 91*(n+1)*binomial(n+3,14)/3.at n=8A027799
• a(n) = 77*(n+1)*binomial(n+6,11).at n=9A027823
• a(1)=1; for n > 0, a(n+1) = rad(a(n))*n where rad=A007947.at n=20A066332
• Denominators of the coefficients of Euler-Ramanujan's harmonic number expansion into negative powers of a triangular number.at n=9A093334
• a(n) = C(3+2*n,3+n)*C(8+2*n,0+n).at n=6A114251
• Numbers with exactly 8 distinct prime divisors {2,3,5,7,11,13,17,19}.at n=19A147575
• Triangle read by rows: T(n, k) = v(n, k)*((1/v(n, k)) mod prime(k)), where v(n, k) = (Product_{j=1..n} prime(j))/prime(k), n >= 1, 1 <= k <= n.at n=44A240673
• a(n) is the least k > 0 such that 1+k, 1+2*k, ..., 1+n*k are pairwise coprime.at n=41A339743
• Distinct values in A339743, in order of appearance.at n=18A339759
• Least integer with n pentagonal divisors.at n=25A356132
• Right edge of triangle A240673: a(n) = A002110(n-1) * A079276(n).at n=8A391734