31536000

Appears in sequences

• Unix epoch timestamp for start of year, beginning with 1970.at n=1A215414
• a(n) = 10*9*8*7*6*5*4*3*2*1 + 20*19*18*17*16*15*14*13*12*11 + ... + (up to the n-th term).at n=15A319874