33782

Appears in sequences

• a(n) = T(n,n), array T given by A047858.at n=11A036542
• Number of rooted 5-connected planar triangulations with 2n faces.at n=9A064521
• Triangle T(n, k) = (-1)^n*StirlingS2(n, k)*StirlingS2(n, n-k), read by rows.at n=38A155999
• Triangle T(n, k) = (-1)^n*StirlingS2(n, k)*StirlingS2(n, n-k), read by rows.at n=42A155999
• Partial sums of A001580.at n=14A174121
• Numbers such that sigma(phi(tau(n)))=tau(phi(sigma(n))).at n=35A226119
• Number of partitions p of n such that exactly one number is in both p and its conjugate.at n=49A240675
• Number of partitions p of n such that (number of numbers in p of form 3k) < (number of numbers in p of form 3k+1).at n=43A241743
• 50-gonal numbers: a(n) = 48*n*(n-1)/2 + n.at n=38A261343
• a(n) is the least k such that in the prime power factorization of k! the exponents of primes p_1, ..., p_n are odd, while the exponent of p_(n+1) is even.at n=16A321362
• Number of necklace compositions of n with no part circularly followed by a divisor or a multiple.at n=38A328601