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A239885
a(n) = 2^(n-2) * prime(n).
5
1, 3, 10, 28, 88, 208, 544, 1216, 2944, 7424, 15872, 37888, 83968, 176128, 385024, 868352, 1933312, 3997696, 8781824, 18612224, 38273024, 82837504, 174063616, 373293056, 813694976, 1694498816, 3456106496, 7180648448, 14629732352, 30333206528
OFFSET
1,2
LINKS
FORMULA
a(n) = A110295(n)/2.
MATHEMATICA
Table[Prime[n]2^(n-2), {n, 30}] (* Harvey P. Dale, Aug 19 2019 *)
PROG
(PARI) vector(50, n, prime(n)*2^(n-2)) \\ Colin Barker, Mar 29 2014
(Magma) [2^(n-2)*NthPrime(n): n in [1..50]]; // G. C. Greubel, Jan 04 2023
(SageMath) [2^(n-2)*nth_prime(n) for n in range(1, 51)] # G. C. Greubel, Jan 04 2023
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Gerasimov Sergey, Mar 29 2014
STATUS
approved