36999

Appears in sequences

• The sequence e when b=[ 1,0,1,1,1,... ].at n=46A042953
• Harmonic mean of digits is 6.at n=23A062184
• Smallest number beginning with n and having a digit sum n.at n=35A077726
• For a string of letters of length k, say abc...def, let f(k) be the string of length k-1 consisting of the adjacent pairs ab, bc, cd, ..., de, ef. Given n, let U be the string of length 2n consisting of n 1's followed by n 2's: 11...122...2. Then a(n) is the number of the C(2n,n) permutations V of U such that f(U) and f(V) agree in exactly one place.at n=10A098813
• Number of n X 4 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=15A207165
• Prime sieve of e.at n=6A248804
• Number of subsets of {1..n} whose elements have the same number of prime factors, counted with multiplicity.at n=39A339511