19969

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 94 ones.at n=19A031862
• Number of compositions of n into floor((3*j)/2) kinds of j's for all j>=1.at n=10A143787
• Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)*(n+2)*(2*n+3)/6)*T(n-2, k-1), read by rows.at n=23A154228
• Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)*(n+2)*(2*n+3)/6)*T(n-2, k-1), read by rows.at n=25A154228
• a(n) = 78*n^2 + 1.at n=16A158769
• Number of (n+1) X 7 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) nondecreasing in column and row directions, respectively.at n=8A204649
• a(n) is the number of primes p less than or equal to 10^n such that p+2 has only prime factors congruent to -1 modulo 4.at n=5A369111
• Number of integer compositions of n whose leaders of strictly increasing runs are strictly decreasing.at n=28A374689