write a logic for following series 2,6,15,35,143,221,323,437,..........

• the sequence comprises of products of consecutive prime numbers
  2=1*2
  6=2*3
  15=3*5
  35=5*7
  there should be a number in this series 77=7*11 (i dont know y this number is missing, otherwise my logic stands true)
  143=11*13
  221=13*17
  323=17*19 and so on...
  the logic is
  for(int i=0;i
• 7 years agoHelpfull: Yes(20) No(2)
• #include
  
  int main() {
  int count=0;
  int j;
  int a;
  int b;
  int limit=15; //change how many no. you want to print
  int prime(int n)
  {
  int flag=0;
  int i;
  if(n==2)
  {flag=1;
  a=2;}
  else
  for(i=2;i
• 6 years agoHelpfull: Yes(2) No(2)
• I dont know whether my logic is correct or not. i cant bring the logic in several steps
  1*2=2
  3*2=6
  8*2=16-1=15
  72*2=144-1=143
  111*2=222-1=221
  219*2=438-1=437
  Please tell me the correct sequence
  
• 7 years agoHelpfull: Yes(0) No(5)
• the sequence comprises of products of consecutive prime numbers
  2=1*2
  6=2*3
  15=3*5
  35=5*7
  
• 7 years agoHelpfull: Yes(0) No(2)
• num= prime+num*2;
  
  num starting from 2 and prime number starting from 2
  num=2*2+2=6
  num=6*2+3=15
  num=15*2+5=35
  num=35*2+7=77 and so on....
• 6 years agoHelpfull: Yes(0) No(0)
• 2*3=6
  3*5=15
  5*7=35
  7*11=77
  11*13=143
  13*17=221
  17*19=323
  19*23=437
  23*29=667
  ANS: 667
• 1 year agoHelpfull: Yes(0) No(0)