A214300 Sum of the terms of the Pisano period mod n.

0, 2, 9, 8, 40, 66, 49, 32, 99, 280, 33, 108, 156, 322, 285, 144, 272, 198, 133, 560, 105, 264, 529, 216, 1200, 1040, 945, 532, 116, 1770, 372, 608, 495, 544, 1365, 324, 1332, 228, 1053, 1120, 779, 798, 1849, 484, 2655, 1058, 705, 432, 2695, 7400, 1785, 1976, 2756

Offset: 1

Author

J. M. Bergot and Charles R Greathouse IV, Jul 11 2012

Keywords

• nonn
• easy

Comments

Row sums of A161553.

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A161553, A088551, A000045, A001175.

Programs

PARI

a(n)=if(n==1,return(0));my(a=0,b=1,s=1,t);while(b||a!=1,s+=a;t=a;a=b;b+=t;if(b>=n,b-=n));s

Formula

a(n) = n * A088551(n).