204800

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*10^j.at n=16A038288
• Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*8^j.at n=19A038310
• 15-almost primes (generalization of semiprimes).at n=11A069276
• Denominators in the Maclaurin series for arctan(1+x).at n=24A075554
• Smallest number beginning with 2 and having exactly n prime divisors counted with multiplicity.at n=14A106422
• a(n) = (2*n + 1) * 2^(n + 1).at n=12A118417
• Numbers of the form Product_i b_i^e_i, where the b_i are all distinct values > 1 and the e_i are a permutation of the b_i.at n=34A122405
• a(n) = n-th integer from among those positive integers with an exponent of n in their prime-factorizations.at n=12A123904
• a(n) = n*2^floor((n+1)/2).at n=25A132314
• a(n) = n^7*(n+1)^2/2.at n=4A163277
• Triangle read by rows in which row n lists n+1 terms, starting with n^5 and ending with n^6, such that the difference between successive terms is equal to n^5 - n^4.at n=42A163285
• Number of binary strings of length n with equal numbers of 0001 and 1000 substrings.at n=18A164161
• a(n) = (n/4)*2^(n/2)*((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).at n=25A187272
• Number of n X n 0..3 arrays with antidiagonals unimodal.at n=2A223579
• Number of nX3 0..3 arrays with antidiagonals unimodal.at n=2A223580
• T(n,k)=Number of nXk 0..3 arrays with antidiagonals unimodal.at n=12A223585
• Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.at n=9A234133
• Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal minimum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally.at n=9A253461
• a(n) is the smallest number satisfying a(n)^2+1 = p(n)*q(n), p(n) < q(n) both prime, such that q(n+1)/p(n+1) < q(n)/p(n) with the initial condition q(1)/p(1) < 3/2.at n=18A261803
• Number of nonisomorphic proper colorings of partition star graph using five colors.at n=56A297569