108545

Appears in sequences

• Crystal ball sequence for 7-dimensional cubic lattice.at n=8A001849
• a(n) = Sum_{k=0..n-1} binomial(n,k+1) * binomial(n+k,k).at n=8A002002
• Crystal ball sequence for 8-dimensional cubic lattice.at n=7A008417
• a(n) = T([n/2],[(n+1)/2]), where T = Delannoy triangle (A008288).at n=15A026003
• Number triangle, equal to half of Delannoy square array A008288.at n=37A113139
• Number of binary strings of length n with equal numbers of 00001 and 10001 substrings.at n=18A164204
• Expansion of ((1-x)/(1-2x))^8.at n=8A169795
• a(n) = Hypergeometric([-n, n], [1], 2).at n=8A182626
• Odd numbers n for which the number of iterations to reach the largest equals number of iterations to reach 1 from the largest in Collatz (3x+1) trajectory of n.at n=37A224533
• Numbers k such that (14*10^k - 221)/9 is prime.at n=23A282383
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where A(n,k) = Sum_{j=0..n} binomial(n,j) * binomial(k*n+j+1,n).at n=43A388052