The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A037572 Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,2. 0
 2, 15, 107, 751, 5258, 36808, 257658, 1803607, 12625251, 88376759, 618637314, 4330461200, 30313228402, 212192598815, 1485348191707, 10397437341951, 72782061393658, 509474429755608, 3566321008289258 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Index entries for linear recurrences with constant coefficients, signature (7,0,1,-7). FORMULA G.f.: x*(2+x+2*x^2) / ( (x-1)*(7*x-1)*(1+x+x^2) ). - R. J. Mathar, Apr 27 2015 A007093(a(n)) = A037575(n). PROG (PARI) a(n)=([0, 1, 0, 0; 0, 0, 1, 0; 0, 0, 0, 1; -7, 1, 0, 7]^(n-1)*[2; 15; 107; 751])[1, 1] \\ Charles R Greathouse IV, Feb 13 2017 CROSSREFS Sequence in context: A308938 A037556 A037492 * A218686 A279087 A037740 Adjacent sequences:  A037569 A037570 A037571 * A037573 A037574 A037575 KEYWORD nonn,base,easy AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 25 01:33 EST 2020. Contains 331229 sequences. (Running on oeis4.)