21966

Appears in sequences

• Expansion of (1-x^6) / (1-x)^6.at n=17A008488
• a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=34A010009
• Numbers n such that p(10n) is prime, where p(n) is the number of partitions of n.at n=29A114170
• a(n) = 8*n^3 + n.at n=14A118465
• a(n) = binomial(n+6,5) - binomial(n,5).at n=16A120478
• a(n) = 686*n + 14.at n=31A157366
• Number of 0..n arrays x(0..3) of 4 elements with zero 3rd differences.at n=40A200155
• Number of (n+6)X(n+6) 0..1 matrices with each 7X7 subblock idempotent.at n=2A224580
• Number of (n+6)X9 0..1 matrices with each 7X7 subblock idempotent.at n=2A224583
• T(n,k)=Number of (n+6)X(k+6) 0..1 matrices with each 7X7 subblock idempotent.at n=12A224588
• Numbers k such that the sum of digits of k! is itself a factorial.at n=5A228311
• Expansion of Sum_{n>=0} x^n * Sum_{k=0..n} C(n,k)^2 * x^(3*k).at n=19A246883
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x-(-1)^k)^k for 0 <= k <= n.at n=39A248976
• Number of (n+1) X (2+1) 0..1 arrays with every 2 X 2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=6A251286
• Number of (n+1)X(7+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=1A251291
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=29A251292
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge or main diagonally.at n=34A251292
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 14", based on the 5-celled von Neumann neighborhood.at n=42A269709
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 150", based on the 5-celled von Neumann neighborhood.at n=43A270323
• Numbers n such that Bernoulli number B_{n} has denominator 1806.at n=30A272139