670896

Appears in sequences

• Length of period of continued fraction expansion of square root of 3^n+1.at n=29A062328
• a(n) = 6*5*4*3*2*1 + 12*11*10*9*8*7 + 18*17*16*15*14*13 + ... + (up to the n-th term).at n=14A319870