34440

Appears in sequences

• Orders of noncyclic simple groups (without repetition).at n=23A001034
• Index of (the image of) the modular group Gamma(n) in PSL_2(Z).at n=40A001766
• Theta series of D_7 lattice.at n=10A008429
• Number of ways of writing n as a sum of 7 squares.at n=20A008451
• Expansion of x/(1 - 7*x - 11*x^2).at n=6A015570
• Sum of Floor[ 3*(1+sqrt(2))^(n-k) ] for k from 1 to infinity.at n=10A020964
• Number of partitions of n that do not contain 8 as a part.at n=41A027342
• a(n) = n*(n+1)*(n+2)/2.at n=40A027480
• a(n) = lcm(n,n+1,n+2).at n=39A033931
• Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,3,2.at n=5A037685
• Denominator of b(n)-b(n+1), where b(n) = n/((n+1)(n+2)) = A026741/A045896.at n=38A051713
• Triangle read by rows. T(n, k) = Sum_{i=0..n} Stirling2(n, i)*Product_{j=1..k} (i - j + 1) for 0 <= k <= n.at n=33A059098
• Each permutation in the list A060117 converted to Site Swap notation, with digits reversed and inverted. "Zero throws" (fixed elements) indicated with 0's.at n=32A060498
• a(n) = lcm(3n+1, 3n+2, 3n+3).at n=13A061495
• Numbers k such that the sum of unitary divisors of k^2 is a square.at n=15A064498
• Sums of terms of groups in A075626.at n=39A075629
• Numbers whose number of divisors equals the sum of their separate prime-power decompositions.at n=16A087004
• Let f(k, n) be the product of n consecutive numbers beginning with k. Then a(n) is the least k > 1+n*(n-1)/2 such that f(k, n) is a multiple of f(1+n*(n-1)/2, n).at n=12A093908
• Expansion of g.f. (1 - x + x^2)/((1-3*x)*(x-1)^2).at n=9A108765
• Orders of non-cyclic simple groups (with repetition).at n=24A109379