33760

Appears in sequences

• Expansion of exp ( - x - (1/2)*x^2 - (1/6)*x^3).at n=12A014775
• Dirichlet convolution of Catalan numbers (1,2,5,14...) with themselves.at n=9A034717
• Triangle of coefficients of polynomials (rising powers) useful for convolutions of A001333(n+1), n >= 0 (associated Pell numbers).at n=11A062133
• Diagonal in array of n-gonal numbers A081422.at n=31A081437
• Number of pairs with two different elements which can be obtained by selecting unique elements from two sets with n+1 and n^2 elements respectively and n common elements.at n=32A085490
• Smallest palindromic numbers of length 4 in two bases differing by n.at n=14A216843
• Number of partitions of n with difference -2 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=48A242690
• a(n) = 31*n^2 + 1.at n=33A247155
• Expansion of g.f. A(x) satisfying A(x) = 1 + x*(A(x)^3 + A(x)^5).at n=5A363311
• Let q be the n-th prime power (A246655), then a(n) = q^3 + q^2 - q; number of solutions to x*y = z*w in the finite field F_q.at n=17A367014