249480

Appears in sequences

• Expansion of theta series of E_7 lattice in powers of q^2.at n=20A004008
• Theta series of D_7 lattice.at n=22A008429
• Nonzero coefficients in theta series of {E_7}* lattice.at n=40A030443
• Triangular table of 2^n *(n+k)! / ((n-k)! * k! * 4^k).at n=33A043302
• Smallest number whose set of divisors contains each digit 0-9 at least n times.at n=28A059436
• Smallest number whose set of divisors contains each digit 0-9 at least n times.at n=29A059436
• Smallest number whose set of divisors contains each digit 0-9 at least n times.at n=30A059436
• Smallest number whose set of divisors contains each digit 0-9 at least n times.at n=31A059436
• a(n) = n*(n^2 - 1)*(n+2)*(2*n^5 + 14*n^4 + 49*n^3 + 91*n^2 + 90*n + 18)/324.at n=6A064203
• Number of permutations in the symmetric group S_n that have even number of transpositions in their cycle decomposition.at n=9A088336
• Smallest positive number of "triangular" shuffles of n(n+1)/2 cards needed to restore them to their original order.at n=26A122158
• A certain partition array in Abramowitz-Stegun order (A-St order), called M_3(6).at n=36A134278
• Where records occur in A144262.at n=11A144376
• Once a number in this sequence is divisible by all numbers 1 to m, subsequent terms are constrained to have the same property; choose the smallest permissible number that is greater than the previous term.at n=35A242298
• Records in A187202 by index.at n=44A242393
• Least integer k such that the set of the divisors of k contains exactly n pairs of numbers having the following property: for each pair of two distinct divisors, the reversal of one is equal to the other.at n=13A260705
• Highly composite numbers of class 3 (see comment in A275239).at n=26A275241
• Bi-unitary harmonic numbers.at n=32A286325
• Numbers n having a proper divisor d such that sigma(n) - k*d = k*n. Case k = 4.at n=23A291458
• Number of polygons formed outside a regular n-gon when every pair of vertices of the n-gon are joined by an infinite line.at n=43A344311