|
Search: id:A126540
|
|
|
| A126540 |
|
Number of base 19 n-digit numbers with adjacent digits differing by five or less. |
|
+0
1
|
|
| 1, 19, 179, 1749, 17269, 171283, 1701677, 16916769, 168213851, 1672806301, 16635830987, 165443231083, 1645339968293, 16363006476491, 162731213670657, 1618373433642625, 16094839928704707, 160064344144932989
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5
|
|
PROGRAM
|
(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))
|
|
CROSSREFS
|
Cf. Base 19 differing by four or less A126514, three or less A126487, two or less A126406, one or less A126373.
Sequence in context: A041690 A133740 A125382 this_sequence A008419 A034273 A139619
Adjacent sequences: A126537 A126538 A126539 this_sequence A126541 A126542 A126543
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Ron Hardin (rhh(AT)cadence.com), Dec 28 2006
|
|
|
Search completed in 0.002 seconds
|
