Unix epoch timestamp for start of year, beginning with 1970.

Terms

a(0) =0a(1) =31536000a(2) =63072000a(3) =94694400a(4) =126230400a(5) =157766400a(6) =189302400a(7) =220924800a(8) =252460800a(9) =283996800a(10) =315532800a(11) =347155200a(12) =378691200a(13) =410227200a(14) =441763200a(15) =473385600a(16) =504921600a(17) =536457600a(18) =567993600a(19) =599616000a(20) =631152000a(21) =662688000a(22) =694224000a(23) =725846400a(24) =757382400