A210579 a(1)=2, a(n+1)=a(n)*(n-th digit of the sequence or 10 in case of digit '0').

2, 4, 16, 16, 96, 96, 576, 5184, 31104, 279936, 1679616, 8398080, 58786560, 352719360, 1763596800, 1763596800, 14108774400, 56435097600, 169305292800, 169305292800, 169305292800, 1693052928000, 6772211712000, 13544423424000, 94810963968000, 853298675712000, 7679688081408000, 23039064244224000

Offset

1,1

Comments

a(1)=0 and a(1)=1 would yield constant sequences.

Links

Table of n, a(n) for n=1..28.

E. Angelini, Multiplying a(n) by the n-th digit of S, Mar 23 2012

Prog

(PARI) S=[a=2]; for(n=1, 50, print1(a", "); a*=if(S[1], S[1], 10); S=concat(vecextract(S, "^1"), eval(Vec(Str(a)))))

Crossrefs

Sequence in context: A135569 A370874 A337109 * A217863 A186108 A131560

Adjacent sequences: A210576 A210577 A210578 * A210580 A210581 A210582

Keyword

nonn,base

Author

Eric Angelini and M. F. Hasler (writeup), Mar 23 2012

Status

approved