The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A235168 Triangle read by rows: row n gives digits of n in primorial base. 18
 0, 1, 1, 0, 1, 1, 2, 0, 2, 1, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 2, 0, 1, 2, 1, 2, 0, 0, 2, 0, 1, 2, 1, 0, 2, 1, 1, 2, 2, 0, 2, 2, 1, 3, 0, 0, 3, 0, 1, 3, 1, 0, 3, 1, 1, 3, 2, 0, 3, 2, 1, 4, 0, 0, 4, 0, 1, 4, 1, 0, 4, 1, 1, 4, 2, 0, 4, 2, 1, 1, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,7 COMMENTS T(n,k) = A108731(n,k) for k=0..23; a(n) = A108731(n) for n=0..63), when both tables are seen as flattened lists; T(n,k) < 10 for k = 1..A235224(n) and n < 2100 = 10 * 7#. When read from right to left, the row n gives exponents for successive primes 2, 3, 5, 7, 11, etc., in A276086(n). - Antti Karttunen, Mar 15 2021 LINKS Reinhard Zumkeller, Rows n = 0..2500 of triangle, flattened Index entries for sequences related to primorial base EXAMPLE . n | .. + _*7# + _*5# + _*3# + _*2# + _*1# | row(n) . ---------+---------------------------------------+--------------------- . 10 | 1*6 + 2*2 + 0*1 | [1,2,0], A276086(10) = 5 * 3^2 . 100 | 3*30 + 1*6 + 2*2 + 0*1 | [3,1,2,0] . 1000 | 4*210 + 5*30 + 1*6 + 2*2n + 0*1 | [4,5,1,2,0] . 2099 | 9*210 + 6*30 + 4*6 + 2*2 + 1*1 | [9,6,4,2,1] . 2100 | 10*210 + 0*30 + 0*6 + 0*2 + 0*1 | [10,0,0,0,0] . 10000 | 4*2310 + 3*210 + 4*30 + 1*6 + 2*2 | [4,3,4,1,2,0] . 100000 | 3*30030+4*2310+3*210+1*30+1*6+2*2+0*1 | [3,4,3,1,1,2,0] . 1000000 | | [1,16,3,9,6,1,2,0] . 10000000 | | [1,0,10,0,0,0,1,2,0] . 1000000 = 1*510510+16*30030+3*2310+9*210+6*30+1*6+2*2+0*1 . 10000000 = 1*9699690+0*510510+10*30030+0*2310+0*210+0*30+1*6+2*2+0*1 . PROG (Haskell) a235168 n k = a235168_row n !! k a235168_row 0 = [0] a235168_row n = t n \$ reverse \$ takeWhile (<= n) a002110_list where t 0 [] = [] t x (b:bs) = x' : t m bs where (x', m) = divMod x b a235168_tabf = map a235168_row [0..] CROSSREFS Cf. A002110, A049345, A108731, A235224 (row lengths), A276086. Sequence in context: A076626 A182886 A108731 * A060950 A039976 A287267 Adjacent sequences: A235165 A235166 A235167 * A235169 A235170 A235171 KEYWORD nonn,tabf,base,look AUTHOR Reinhard Zumkeller, Jan 05 2014 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 1 13:31 EST 2023. Contains 367475 sequences. (Running on oeis4.)