23826

Appears in sequences

• Poincaré series [or Poincare series] (or Molien series) for mod 2 cohomology of universal W-group W(3).at n=19A014696
• a(n) = Sum_{k=0..n} ceiling(k^3/n).at n=44A014813
• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,27.at n=9A064250
• Triangle read by rows: odd-numbered rows of A106580.at n=69A106595
• Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n} having k adjacent blocks of size 2, i.e., blocks of the form (i,i+1) (0 <= k <= floor(n/2)).at n=38A184174
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 8 as largest digit.at n=35A257368
• Number of squarefree parts in the partitions of n into 7 parts.at n=44A309459
• Numbers k such that 319*2^k+1 is prime.at n=12A322951
• Square array A(n, k) = n! * [t^n] (exp(t)/(1+k-k*exp(t))) for n >= 0 and k >= 0, read by antidiagonals upwards.at n=50A369435