Where t(n) is the n-th 7-step Fibonacci number as defined by:
a(0)=a(1)=a(2)=a(3)=a(4)=a(5)=a(6)=1,
a(n)=a(n-1)+a(n-2)+a(n-3)+a(n-4)+a(n-5)+a(n-6)+a(n-7)

t(148831)=1160759915 ... 1594380283
t(135942)=4218184930 ... 9358893057
t(107494)=4615425945 ... 0729830401
t(71993)=7424712885 ... 2337009953

Verified PRP by pfgw.

To be completed...