1,5,6,25 26,30,31,125,126,130,131.......find 157th term.

• earlier ans was wrong....
  ans is 78196
  terms are working like
  2^1th(term)=5^1 , 2^2th = 5^5 , 2^3th = 5^3 , 2^4 = 5^4 ... 2^7th(128th term) = 5^7 (78125).
  
  and the inner series is working as +1,+4,+1,+4,+1 . . . between the powers of 5
  so 158th = 128th + (14*4) + (15*1) = 78196
• 12 years agoHelpfull: Yes(31) No(0)
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• 12 years agoHelpfull: Yes(20) No(1)
• ((126*5*5+1)*5+1)*5+1
  as we will get a 2 2^2 2^3 .... terms and the series is of the for 1*5=5 5+1=6 and 5*5=25 5*5+1=26...
• 12 years agoHelpfull: Yes(0) No(5)
• 78205
  
  5^7+16*1+16*4
• 12 years agoHelpfull: Yes(0) No(1)
• 157th term = 78210
• 12 years agoHelpfull: Yes(0) No(2)