Select the number from among the given options that can replace the question mark (?) in the following series.
1, 1, 2, 2, 6, 10, 42, ?, 1806
1
1203
2
1302
3
1010
4
1389
Select the number from among the given options that can replace the question mark (?) in the following series.
1, 1, 2, 2, 6, 10, 42, ?, 1806