Indiana Code Title 29. Probate § 29-1-3-8

Sec. 8. (a) When a testator fails to provide a will for any of the testator's children born or adopted after the making of the testator's last will, such child, whether born before or after the testator's death, shall receive a share in the estate of the testator equal in value to that which the child would have received if the testator had died intestate, unless it appears from the will that such omission was intentional, or unless:

(b) If, at the time of the making of the testator's will, the testator believes any of the testator's children to be dead, and fails to provide for such child in the testator's will, the child shall receive a share in the estate of the testator equal in value to that which the child would have received if the testator had died intestate, unless it appears from the will or from other evidence that the testator would not have devised anything to such child had the testator known that the child was alive.