0,1

a(n)=A136016 (8,35,80,) mod 9 . A136016 is linked to Lyman and Paschen spectra of hydrogen. [From Paul Curtz (bpcrtz(AT)free.fr), Oct 28 2008]

If A=[A158070] 64*n.^2+2*n (n>0, 66, 260, 582,.,. ,.,); Y=[A010731] 8 (8,8,8,.,..,); X=[A158071] 64*n+1 (n>0, 65, 129, 193, ,. .,), we have, for all terms, Pell's equation X^2-A*Y^2=1. Example: 65^2-66*8^2=1; 129^2-260*8^2=1; 193^2-582*8^2=1. [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Mar 12 2009]

Index entries for sequences related to linear recurrences with constant coefficients

Tanya Khovanova, Recursive Sequences

INRIA Algorithms Project, Encyclopedia of Combinatorial Structures 1016

Cf. A158070, A158071 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Mar 12 2009]

Sequence in context: A125555 A010531 A031176 this_sequence A048762 A160949 A048763

Adjacent sequences: A010728 A010729 A010730 this_sequence A010732 A010733 A010734

nonn

N. J. A. Sloane (njas(AT)research.att.com).