0,1

a(2n) = A006516(n+2); a(2n+1) = A086221(n+1).

Cf. A000225, A052955, A055010, A086221.

Sequence in context: A086224 A116913 A016071 this_sequence A101622 A042607 A084381

Adjacent sequences: A086649 A086650 A086651 this_sequence A086653 A086654 A086655

nonn,easy

Marco Matosic (marcomatosic(AT)hotmail.com), Jul 27 2003

Edited and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Feb 17 2005