0,4

Array of a(n) and successive differences: 0,0,1,2,4,8,16,32, 0,1,1,2,4,8,16,32, A166444 1,0,1,2,4,8,16,32, A034008 -1,1,1,2,4,8,16,32, (A141531) 2,0,1,2,4,8,16,32, -2,1,1,2,4,8,16,32, . Main diagonal of a(n) is A166444 and main diagonal of A166444 is a(n); a(n) and A166444 are companions ,differently of A131577 and A011782; a(2n)+a(2n+1)=0,3,12,48,=0,A164346.

a(n)= 0,A131577 ; a(n)= A131577 - A166444 .

Sequence in context: A133025 A118655 A155559 this_sequence A011782 A034008 A123344

Adjacent sequences: A166684 A166685 A166686 this_sequence A166688 A166689 A166690

nonn,uned

Paul Curtz (bpcrtz(AT)free.fr), Oct 18 2009