A173094
a(1)=2, a(2)=3, a(n)=a(n-2)*a(n-1)-a(n-1).
Original entry on oeis.org
2, 3, 3, 6, 12, 60, 660, 38940, 25661460, 999231590940, 25641740502411581460, 25622037156669717708454796390940, 656993627914472375437286314449293585586011019581460
Offset: 1
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a=2;b=3;lst={a,b};Do[c=a*b-b;AppendTo[lst,c];a=b;b=c,{n,13}];lst
RecurrenceTable[{a[1]==2,a[2]==3,a[n]==a[n-2]a[n-1]-a[n-1]},a,{n,20}] (* Harvey P. Dale, Oct 10 2015 *)
A173096
a(1) = 3, a(2) = 4, a(n) = a(n-2)*a(n-1)-a(n-2)-a(n-1).
Original entry on oeis.org
3, 4, 5, 11, 39, 379, 14363, 5428835, 77968913907, 423280290755965603, 33002704548058529678235461411, 13969394376835442790478317113350745782558418819, 461027795334010317786933009714496751421279215574147082960119439306256813379
Offset: 1
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a=3;b=4;lst={a,b};Do[c=a*b-a-b;AppendTo[lst,c];a=b;b=c,{n,12}];lst
nxt[{a_,b_}]:={b,a*b-a-b}; NestList[nxt,{3,4},15][[;;,1]] (* Harvey P. Dale, Aug 31 2023 *)
A173097
a(1)=1, a(2)=2, a(n)=2*a(n-2)*a(n-1)-a(n-2).
Original entry on oeis.org
1, 2, 3, 10, 57, 1130, 128763, 291003250, 74940902830737, 43616092563357042787250, 6537258709293941644669222566000575763, 570259361950353096439107826720562074995499493885695588056250
Offset: 1
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a=1;b=2;lst={a,b};Do[c=2*a*b-a;AppendTo[lst,c];a=b;b=c,{n,11}];lst
RecurrenceTable[{a[1]==1,a[2]==2,a[n]==2a[n-2]a[n-1]-a[n-2]},a,{n,15}] (* Harvey P. Dale, Sep 10 2016 *)
A173098
a(1)=1, a(2)=2, a(n)=2*a(n-2)*a(n-1)-a(n-1).
Original entry on oeis.org
1, 2, 2, 6, 18, 198, 6930, 2737350, 37936933650, 207693292716721350, 15758493330480878908260133650, 6545866736124132578837836330405530973356721350
Offset: 1
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a=1;b=2;lst={a,b};Do[c=2*a*b-b;AppendTo[lst,c];a=b;b=c,{n,12}];lst
RecurrenceTable[{a[1]==1,a[2]==2,a[n]==2a[n-2]a[n-1]-a[n-1]},a,{n,14}] (* Harvey P. Dale, Jan 27 2012 *)
A173099
a(1)=1, a(2)=3, a(n)=2*a(n-2)*a(n-1)-a(n-2)-a(n-1).
Original entry on oeis.org
1, 3, 2, 7, 19, 240, 8861, 4244179, 75211087198, 638418558490509507, 96032307742263928939148386067, 122617614954666266094919182714589930973500782364
Offset: 1
-
a=1;b=3;lst={a,b};Do[c=2*a*b-a-b;AppendTo[lst,c];a=b;b=c,{n,12}];lst
nxt[{a_,b_}]:={b,2*a*b-a-b}; NestList[nxt,{1,3},12][[All,1]] (* Harvey P. Dale, Jan 03 2022 *)
A173100
a(1)=2, a(2)=2, a(n)=2*a(n-2)*a(n-1)-a(n-2)-a(n-1).
Original entry on oeis.org
2, 2, 4, 10, 66, 1244, 162898, 405126082, 131988051722292, 106943604398142563191514, 28230555977340642743866391573263146370, 6038154820760673175690853635193471535603786459126013221470476
Offset: 1
-
a=2;b=2;lst={a,b};Do[c=2*a*b-a-b;AppendTo[lst,c];a=b;b=c,{n,12}];lst
Showing 1-6 of 6 results.