319200

Appears in sequences

• a(n) = (n+1)*(2*n+1)*(3*n+1).at n=37A011199
• a(n) = 1*2*3*4 - 5*6*7*8 + 9*10*11*12 - 13*14*15*16 + ... - (up to n).at n=27A319544
• a(n) = 4*3*2*1 - 8*7*6*5 + 12*11*10*9 - 16*15*14*13 + ... - (up to the n-th term).at n=27A319887
• Triangle read by rows: T(n, k) = 3^n*Sum_{j=0..k} (-1)^(k - j)*binomial(k, j) * Pochhammer(j/3, n).at n=33A371076
• Expansion of e.g.f. 1/(1 + x^2 * log(1 - x - x^2)).at n=8A371197