69888

Appears in sequences

• a(n) = A027144(2n, n-2).at n=6A027147
• a(n) = (n+1)*binomial(n+1,5).at n=11A027765
• a(n) = (n+1)*binomial(n+1,11).at n=5A027771
• a(1) = 1, a(2n) = 16a(n), a(2n+1) = a(2n)+1.at n=28A033052
• Numbers with multiplicative persistence value 7.at n=3A046516
• Numbers n such that sum of digits of n is equal to the sum of the prime factors of n, counted with multiplicity.at n=15A063737
• Smallest multiple of 8 with digit sum n.at n=39A069536
• a(n) = n^4*(n^4-1)/240.at n=8A078876
• Number of subsets of integers 1 through n (including the empty set) containing no pair of integers that share a common factor.at n=32A084422
• a(n) = n^4 + n^3 + n^2.at n=16A100019
• Weight distribution of [64,18,22] extended binary primitive BCH (or XBCH) code.at n=15A109488
• Weight distribution of [64,18,22] extended binary primitive BCH (or XBCH) code.at n=17A109488
• Triangle read by rows, giving Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=48A123354
• Triangle read by rows: T(n,k) = S1(n,k)*2^k, where S1(n,k) is an unsigned Stirling number of the first kind (cf. A008275) (n >= 1, 1 <= k <= n).at n=42A125553
• Coefficients of generalized factorial polynomials p(x, n) = (x/a - (n-1))*p(x, n-1) with p(x, 0) = 1, p(x, 1) = x/a and a = 1/2. Triangle read by rows, for n >= 0 and 0 <= k <= n.at n=52A137312
• Coefficients of raising factorial polynomials, T(n,k) = [x^k] p(x, n) where p(x, n) = (m*x + n - 1)*p(x, n - 1) with p[x, 0] = 1, p[x, -1] = 0, p[x, 1] = m*x and m = 2. Triangle read by rows, for n >= 0 and 0 <= k <= n.at n=52A137320
• Composite numbers whose multiplicative persistence is 7.at n=3A199997
• Square array read by antidiagonals downwards: super Patalan numbers of order 4.at n=23A248325
• Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.at n=15A252526
• Triangle of numbers where T(n,k) is the number of k-dimensional faces on a partially truncated n-cube, 0 <= k <= n.at n=48A271316