Multiply each term by 3 and erase the rightmost digit of the result: this leaves the sequence unchanged.

A365987

Multiply each term by 3 and erase the rightmost digit of the result: this leaves the sequence unchanged.

Terms

    a(0) =1a(1) =4a(2) =14a(3) =47a(4) =157a(5) =524a(6) =1747a(7) =5824a(8) =19414a(9) =64714a(10) =215714a(11) =719047a(12) =2396824a(13) =7989414a(14) =26631380a(15) =88771267a(16) =295904224a(17) =986347414a(18) =3287824714a(19) =10959415714a(20) =36531385714a(21) =121771285714a(22) =405904285714

External references