OFFSET
1,2
EXAMPLE
a(1) = 1 steps over 1 comma to be met by the odd digit 3;
a(2) = 3 steps over 3 commas to be met by the odd digit 5;
a(3) = 2 steps over 2 commas to be met by the same odd digit 5;
a(4) = 4 steps over 4 commas to be met by the odd digit 9;
a(5) = 5 steps over 5 commas to be met by the odd digit 1 (of 10);
a(6) = 6 steps over 6 commas to be met by the odd digit 1 (of 12); etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, Mar 23 2020
STATUS
approved