A160190 Prime terms multiplied by Fibonacci terms (omitting first two terms of Fibonacci sequence)

4, 9, 25, 56, 143, 273, 578, 1045, 2047, 4176, 7223, 13949, 25010, 42441, 75059, 136952, 246679, 412665, 733382, 1257481, 2091961, 3663072, 6227075, 10803977, 19052546, 32098911, 52965587, 89028280, 146743321, 246148917, 447621406

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Formula

Superimpose Fibonacci sequence over prime sequence (omitting first two Fibonacci terms -- line up on 2,3,5). Then multiply Fibonacci by prime term.

Example

a(1),a(2),a(3)=4,9,25 because the first three terms of the Fibonacci (>1) and prime sequences are the same.

Prog

(UBASIC) 10 'Fibo A004399 Fib*Prm 20 P=1:A=1:B=1:Q=Q+1 30 C=A+B:E=nxtprm(P):print C*E; :P=E 40 D=B+C:E=nxtprm(P):print D*E; :P=E 50 Q=Q+1 60 A=C:B=D:if Q<40 then 30

Crossrefs

A004399 A160189

Sequence in context: A146981 A068373 A030481 * A226917 A032127 A181357

Adjacent sequences: A160187 A160188 A160189 * A160191 A160192 A160193

Keyword

easy,nonn

Author

Enoch Haga, May 04 2009

Status

approved