A131871 a(n) = A131766(n) / 18.
0, 0, 0, 0, 0, 1, 2, 3, 4, 10, 21, 32, 43, 54, 165, 276, 387, 498, 1109, 2220, 3331, 4442, 5553, 16664, 27775, 38886, 49997, 111108, 222219, 333330, 444441, 555552, 1666663, 2777774, 3888885, 4999996, 11111107, 22222218, 33333329, 44444440, 55555551, 166666662
Offset: 0
Links
- Index entries for linear recurrences with constant coefficients, signature (2,-1,0,0,0,0,0,0,100,-200,100).
Extensions
a(32) corrected and more terms from Georg Fischer, Jul 31 2025