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1,2
Interleaving of A000079 and A000079 without initial terms 1, 2, 4.
Binomial transform is A048696. Second binomial transform is A164298.
Table of n, a(n) for n=1..41.
a(n) = (5+3*(-1)^n)*2^(1/4*(2*n-5+(-1)^n)).
G.f.: x*(1+8*x)/(1-2*x^2).
(MAGMA) [ n le 2 select 7*n-6 else 2*Self(n-2): n in [1..41] ];
Equals A112032 without initial term 4.
Cf. A000079 (powers of 2), A048696, A164298.
Sequence in context: A167623 A040063 A196170 * A050096 A161593 A008866
Adjacent sequences: A164584 A164585 A164586 * A164588 A164589 A164590
nonn
Klaus Brockhaus, Aug 17 2009
approved