1662804

Appears in sequences

• 4-dimensional Catalan numbers.at n=5A005790
• 5-dimensional Catalan numbers.at n=4A005791
• Expansion of 1/((1-x)*(1-x^2))^4.at n=33A038164
• Array T(m,n) read by antidiagonals: T(m,n) (m >= 1, n >= 1) = number of ways to arrange the numbers 1,2,...,m*n in an m X n matrix so that each row and each column is increasing.at n=31A060854
• Array T(m,n) read by antidiagonals: T(m,n) (m >= 1, n >= 1) = number of ways to arrange the numbers 1,2,...,m*n in an m X n matrix so that each row and each column is increasing.at n=32A060854
• Multi-dimensional Catalan numbers: diagonal T(n,n+1) of A060854.at n=3A060855
• a(n) = (2n+1)*(2n+2)*(2n+6)*(2n+7).at n=16A069080
• Distinct values in A114717 in order of appearance.at n=20A119841
• The smallest number with n digits in its prime factorization (total count of digits of all bases and exponents).at n=11A192010
• Lexicographically earliest sequence such that for any n>1, n=u*v, where u/v = a(n)/a(n-1) in reduced form.at n=19A260850
• Irregular triangle read by rows T(n,m), coefficients in power/Fourier series expansion of an arbitrary anharmonic oscillator's exact differential time dependence.at n=43A276815
• Triangle read by rows: T(n,k) is the number of n X k Young tableaux, where 0 <= k <= n.at n=19A321716
• a(n) = sigma(n) * binomial(2*n-1,n), for n >= 1.at n=9A357552
• A260850 sorted into increasing order and duplicates omitted.at n=18A370974