OFFSET
1,2
COMMENTS
Starting with an odd number x = A135765(row,col), the result after one combined Collatz step (3x+1)/2 is found in A254051(row+1,col), and after iterated [i.e., we divide all powers of 2 out] Collatz step: x_new <- A139391(x) = A000265(3x+1) the resulting odd number x_new is located A135764(1,A(row+1,col)).
What the resulting odd number will be, is given by A254101(row+1,col).
LINKS
EXAMPLE
The top left corner of the array:
1, 2, 1, 2, 4, 5, 3, 2, 7, 8, 1, ...
1, 1, 6, 9, 3, 7, 15, 18, 10, 6, 24, ...
3, 12, 1, 13, 30, 39, 22, 7, 57, 66, 18, ...
4, 9, 48, 75, 6, 58, 129, 156, 85, 25, 210, ...
21, 102, 36, 112, 264, 345, 193, 117, 507, 588, 79, ...
31, 10, 426, 669, 198, 517, 1155, 1398, 760, 441, 1884, ...
183, 912, 160, 1003, 2370, 3099, 1732, 66, 4557, 5286, 1413, ...
274, 684, 3828, 6015, 889, 4648, 10389, 12576, 6835, 496, 16950, ...
etc.
PROG
(Scheme, two versions)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Antti Karttunen, Jan 27 2015
STATUS
approved