

A130175


2n+1 appears (last digit of 2n+1) times .


1



1, 3, 3, 3, 5, 5, 5, 5, 5, 7, 7, 7, 7, 7, 7, 7, 9, 9, 9, 9, 9, 9, 9, 9, 9, 11, 13, 13, 13, 15, 15, 15, 15, 15, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 19, 19, 19, 21, 23, 23, 23, 25, 25, 25, 25, 25, 27, 27, 27, 27, 27, 27, 27, 29, 29, 29, 29, 29, 29, 29, 29, 29, 31, 33, 33
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


LINKS



FORMULA

a(n) = a(n1) + a(n25)  a(n26) for n > 26.  Robert Israel, Jun 09 2023


MAPLE

seq((2*m+1)$(2*m+1 mod 10), m=0..100); # Robert Israel, Jun 09 2023


MATHEMATICA

Table[Table[n, {Mod[n, 10]}], {n, 1, 35, 2}]//Flatten (* Harvey P. Dale, Apr 24 2018 *)


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



