151351200

Appears in sequences

• Number of permutations of {1,2,3,...,n} where the elements of n are considered indistinguishable if they differ by a power of 2 (for example 3, 12 and 24 are all considered equivalent).at n=14A067281
• a(n) = core(1)*core(2)*...*core(n) where core(n) is the squarefree part of n (A007913).at n=13A069260
• Number of permutations in the symmetric group S_n that have odd number of transpositions in their cycle decomposition.at n=12A088506
• Numerators of a Fibonacci related transform of 1/(n+1).at n=15A097346
• Let k=binomial(n-1,2); a(n) = n*(n-1)*k!/(k-n+1)! for n >= 4, with a(1)=a(2)=a(3)=0.at n=6A119750
• Denominator of Sum_{i=1..n} 1/(i^2*binomial(2*i,i)).at n=7A134805
• Positions of records in A306440.at n=32A307221
• Partial products of squarefree semiprimes (A006881).at n=6A339191
• a(n) = LCM of pairwise products of distinct integers from {1,2,...,n}.at n=14A366368
• a(n) = LCM of pairwise products of distinct integers from {1,2,...,n}.at n=15A366368
• Square array read by antidiagonals: row n lists numbers that occur exactly n times in A036038 (or A050382 or A078760 or A318762), i.e., numbers m such that the multinomial coefficient (x_1 + ... + x_k)!/(x_1! * ... * x_k!) is equal to m for exactly n integer partitions (x_1, ..., x_k).at n=43A376370
• Numbers k such that A380845(k) > 4*k.at n=22A380931